Document:

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                                                                   Exhibit 10.43

                            AGREEMENT TO AMEND NOTES

     This Agreement to Amend Notes (the "Agreement") is entered into as of
September __, 2003 by and among Hudson Respiratory Care Inc., a California
corporation (the "Company"), HRC Holding Inc., a Delaware corporation and
wholly-owned subsidiary of the Company ("HRC") and FS Equity Partners IV, L.P.,
a Delaware limited partnership ("FSEP IV") to amend that certain Senior
Subordinated Convertible Promissory Note set forth on Schedule A hereto made by
the Company in favor of FSEP IV and those certain Promissory Notes set forth on
Schedule A hereto made by HRC in favor of FSEP IV.

                                 R E C I T A L S
                                 - - - - - - - -

     WHEREAS, the Company has previously issued to FSEP IV a Senior Subordinated
Convertible Promissory Note in a principal amount of $5,000,000 (the "Hudson
Note") and HRC has previously issued to FSEP IV Promissory Notes in an aggregate
principal amount of $2,264,241 (the "HRC Notes", and collectively with the
Hudson Note, the "Notes"), all as set forth on Schedule A;

     WHEREAS, the Company wishes to obtain credit facility subject to the terms
and provisions of a Loan and Security Agreement by and among the Company, Wells
Fargo Foothill, Inc., as the Arranger and Administrative Agent and the Lenders
that are signatory thereto and a Loan and Security Agreement by and among the
Company, MW Post Advisory Group, LLC, as the Administrative Agent and the
Lenders that are signatory thereto (collectively, the "Loan and Security
Agreements");

     WHEREAS, it is a condition to the making of loans under the Loan and
Security Agreements to the Company that the Company and HRC amend the Notes to
extend the maturity date of the Notes to March 31, 2008.

                                A G R E E M E N T
                                - - - - - - - - -

     NOW, THEREFORE, in consideration of the foregoing and of the mutual
covenants and agreements of the parties contained herein, the parties hereby
agree as follows:

     1.   Amendment to the HRC Notes. The opening paragraph of the HRC Notes is
hereby amended to extend the Maturity Date of the HRC Notes to March 31, 2008.

     2.   Amendments to the Hudson Note.

          (a)  The opening paragraph of the Hudson Note is hereby amended to
extend the Maturity Date of the Hudson Note to March 31, 2008.

          (b)  Section 2(a) of the Hudson Note is hereby amended so that the
reference in Section 2(a) to the "Subordination Agreement" shall mean (i) that
certain Subordination Agreement, dated as of October 7, 2003, by and among the
Company, FSEP IV, and the additional parties signatory thereto and Wells Fargo
Foothill, Inc., as the arranger and

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administrative agent for the lenders from time to time party to the Loan
Agreement (as defined therein) and (ii) that certain Subordination Agreement,
dated as of October 7, 2003, by and among the Company, FSEP IV, and the
additional parties signatory thereto and MW Post Advisory Group, LLC, as the
administrative agent for the lenders from time to time party to the Loan
Agreement (as defined therein).

     3.   Scope. This Agreement shall have the effect of amending the Notes as
appropriate to express the agreements contained herein. In all other respects,
the Notes shall remain in full force and effect in accordance with their
respective terms.

     4.   Governing Law. In all respects, including all matters of construction,
validity and performance, this Agreement and the rights and obligations arising
hereunder shall be governed by, and construed and enforced in accordance with,
the internal laws of the State of California applicable to contracts made and
performed in such state (without regard to the choice of law or conflicts of law
principles there).

     5.   Counterparts; Facsimile. This Agreement may be executed in any number
of counterparts and by facsimile, each of which shall be deemed an original, but
all of which taken together shall constitute one and the same instrument.

<PAGE>

     IN WITNESS WHEREOF, this Agreement has been duly executed as of the date
first written above.

THE COMPANY:                            HUDSON RESPIRATORY CARE INC.,
                                        a California corporation

                                        By:
                                           -------------------------------------
                                             Name:
                                             Title:

HRC:                                    HRC HOLDING, INC.,
                                        a Delaware corporation

                                        By:
                                           -------------------------------------
                                             Name:
                                             Title:

HOLDER:                                 FS EQUITY PARTNERS IV, L.P.,
                                        a Delaware limited partnership

                                        By:  FS Capital Partners LLC
                                        Its: General Partner

                                             By:
                                                --------------------------------
                                                   Name:
                                                   Title:

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                                   SCHEDULE A

                                           PRINCIPAL AMOUNT
ISSUER                                          OF NOTE

Hudson Respiratory Care Inc.               $      5,000,000
HRC Holding Inc.                           $        759,128
HRC Holding Inc.                           $      1,505,113
                                           ----------------
        Aggregate Principal Amount:        $      7,264,241Amendment No. 2 to the Rotech Healthcare Inc. Common Stock Option Plan

 Exhibit 4.1 
  
 AMENDMENT NO. 2 TO THE 
 ROTECH HEALTHCARE INC. 
 COMMON STOCK OPTION PLAN 
  
 WHEREAS, Rotech Healthcare Inc. (the “Company”) has
established and maintains the Rotech Healthcare Inc. Common Stock Option Plan (the “Plan”); and 
  
 WHEREAS, pursuant to Section 7(b) of the Plan, the Company’s Board of Directors (the “Board”) may at any time amend the Plan,
subject to certain limitations; 
  
 WHEREAS, the Board
deems it to be in the best interests of the Company to amend the Plan to provide for one hundred percent (100%) vesting of all options outstanding upon a Change in Control (as defined in the Plan); 
  
 WHEREAS, on June 24, 2003, the Board approved such amendment to the
Plan; 
  
 WHEREAS, for purposes of clarification the Board
deems it to be in the best interests of the Company to amend the Plan to provide that the Plan will be administered by the Board or a committee thereof; 
  
 WHEREAS, on August 26, 2003, the Board approved such amendment to the Plan; and 
  
 NOW, THEREFORE, the Plan is hereby amended, effective as of August 26, 2003 as follows: 
  
 FIRST: Section 5(a)(iv)(b) of the Plan is hereby amended to read in
its entirety as follows: 
  
 “(b) one
hundred percent (100%) of the Shares under such Option upon a Change in Control, and “ 
  
 SECOND: The first sentence of Section 6 of the Plan is hereby amended to read in its entirety as follows: 
  
 “The Plan shall be administered by the Board or a committee thereof appointed by the Board.” 
  
 THIRD: Except to the extent hereinabove set forth, the Plan shall
remain in full force and effect without change or modification. 
  
 IN WITNESS WHEREOF, and as evidence of the adoption of the foregoing, the Company has caused this Amendment No. 2 to be executed by a duly authorized officer this 26th day of August 26, 2003. 
  

	ROTECH HEALTHCARE INC.
		
	By:	 	  

		
	 Name:
	 	  

		
	 Title:Fourth Amendment to Credit Agreement effective August 31, 2003

 EXHIBIT 10.1 
  
 FOURTH AMENDMENT TO CREDIT AGREEMENT 
 BY AND BETWEEN GMX RESOURCES, INC., ENDEAVOR PIPELINE INC., 
 EXPEDITION NATURAL RESOURCES
INC.’ AND LOCAL OKLAHOMA BANK 
  
 THIS FOURTH AMENDMENT
TO CREDIT AGREEMENT (the “Amendment”) is executed to be effective as of the 31st day of August, 2003 by
and between GMX RESOURCES INC., an Oklahoma corporation, ENDEAVOR PIPELINE INC., an Oklahoma corporation, and EXPEDITION NATURAL RESOURCES INC., an Oklahoma corporation (the “Borrowers”) and LOCAL OKLAHOMA BANK, N.A. (the
“Bank”). 
  
 W I T N E S S E T H: 
  
 WHEREAS, effective October 31, 2000 Borrowers and Bank entered into that
certain Credit Agreement (the “Original Agreement”) whereby Bank provided Borrowers with a revolving line of credit in an amount governed by a Borrowing Base which shall not exceed $15,000,000.00, as evidenced by reducing revolving
promissory note with a stated like amount of even date with the Original Agreement (the “Original Note”). 
  
 WHEREAS, as of June 18, 2001, Borrowers and Bank amended the Original Agreement for the first time (the “First Amendment”) in order to permit
certain preferred stock dividends and to evidence certain other changes as set forth therein. 
  
 WHEREAS, as of May 28, 2002, Borrowers and Bank amended the Original Agreement as amended by the First Amendment for the second time (the “Second Amendment”) in order to increase the rate of interest,
include a termination fee, alter the reporting requirements and to make such additional changes as are set forth therein. 
  
 WHEREAS, as of August 14, 2002 Borrowers and Bank amended the Original Agreement as amended by the First and Second Amendments for the third time (the
“Third Amendment”) in order to modify certain financial covenants as referenced therein. 
  
 WHEREAS, certain portions of the Original Agreement as amended by First, Second and Third Amendments were amended by a Loan Modification and Forbearance
Agreement in May of 2003 and a Second Loan Modification and Forbearance Agreement in June 2003 (the “Forbearance Agreements”; the Original Agreement as amended by the First and Second and Third Amendments and as further modified by the
Forbearance Agreements is referred to herein as the “Agreement”). 
  
 WHEREAS, the obligations described in the Agreement are secured by, among other things not specifically set forth herein, certain oil and gas properties and other properties as set forth in the Agreement; and

  

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 WHEREAS, all capitalized terms not otherwise defined herein shall have those meanings assigned to such
terms in the Agreement; 
  
 WHEREAS, Borrowers and Bank desire to
amend the Agreement for the fourth time in order to evidence such changes to the Agreement as more particularly set forth herein; 
  
 NOW THEREFORE, in consideration of the mutual covenants and agreements herein contained and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the Borrowers and the Bank hereby agree to amend the Agreement as follows: 
  
 A. CHANGES TO THE AGREEMENT 
  
 1. The reference to “May 31, 2003” in the definition of “Maturity Date” set forth in Section 1.2 of the Agreement, Additional
Defined Terms, is hereby replaced with “March 1, 2004” in order to evidence the agreement of the parties to extend the Maturity Date. 
  
 2. Notwithstanding anything contained in the Forbearance Agreements to the contrary, the repayment provisions set forth in Section 2.6 of the Agreement,
Scheduled Principal and Interest Payments, controls Borrower’s repayment obligations, and, to the extent such provision was removed by the Forbearance Agreements, is hereby reinstated as set forth in the Agreement. 
  
 3. Section 7.1 of the Agreement, Adjusted Current Ratio, is hereby
amended and restated in its entirety as follows: 
  
 7.1
Adjusted Current Ratio. Maintain a minimum Adjusted Current Ratio, calculated and submitted on a quarterly basis of, at least, .65:1.00 for the quarterly reporting period ending September 30, 2003 and 1.00:1.00 for the quarterly reporting
period ending December 31, 2003 and each quarterly reporting period thereafter. The “Adjusted Current Ratio” is defined as Current Assets plus the Available Commitment divided by Current Liabilities, minus any balance outstanding on this
credit facility that would otherwise be accounted for as a Current Liability. 
  
 4. To evidence the Borrowers’ continuing obligation to repay the Note, the Borrower shall make and deliver to the Bank the amended and restated promissory note in the form of Annex “1” hereto
attached (the “Replacement Note”), which shall substitute and replace in its entirety the Note referred to in the Agreement, without cancellation, novation or payment. 
  
 5. The document attached hereto as Annex “1” shall replace in its entirety that document attached to the Agreement
as Exhibit “A”. 
  
 B. REPRESENTATIONS AND WARRANTIES

  
 Each Borrower hereby represents and warrants to Bank that:

  

 2 

 1. Each Borrower is a corporation, duly organized, legally existing, and in good standing under the laws
of the State of Oklahoma, and is duly qualified as a foreign corporation and in good standing in all other states wherein the nature of its business or its assets make such qualification necessary. 
  
 2. Each Borrower’s execution and delivery of this Amendment and
performance of its obligations hereunder: (a) are and will be within its powers; (b) are duly authorized by its board of directors; (c) are not and will not be in contravention of any law, statute, rule or regulation, the terms of its articles or
incorporation and bylaws, nor of any agreement or undertaking to which any Borrower or any of its properties are bound; (d) do not require any consent or approval (including governmental) which has not been given; and (e) will not result in the
imposition of liens, charges or encumbrances on any of its properties or assets, except those in favor of Bank hereunder. 
  
 3. This Amendment, when duly executed and delivered, will constitute the legal, valid and binding obligations of Borrowers, enforceable in accordance with
its terms. 
  
 4. All financial statements, balance sheets, income
statements and other financial data which have been or are hereafter furnished to Bank by Borrowers to induce Bank to make the loans hereunder due, and as to subsequent financial statements will, fairly represent each Borrower’s financial
condition as of the dates for which the same are furnished. All such financial statements, reports, papers and other data furnished to Bank are and will be, when furnished: prepared in accordance with generally accepted accounting principles
consistently applied; accurate and correct in all material respects; and complete insofar as completeness may be necessary to give Bank a true and accurate knowledge of the subject matter. Since the date of the last such financial statements, no
material adverse change has occurred in the operations or condition, financial or otherwise and other financial data provided to Bank; of any Borrower, nor, to the best of their knowledge, has any Borrower incurred, any material liabilities or made
any material investment or guarantees, direct or contingent, in any single case or in the aggregate, which has not been disclosed to Bank. 
  
 5. The Borrowers are the sole and lawful owner of the Collateral, pledged, mortgaged or assigned by it, and Borrowers have, and as to after acquired
property or new properties will have, good right to cause the Collateral to be hypothecated to Bank as security for the obligations described in the Agreement, as amended hereby. Further, the ownership interests set forth in that certain Engineering
Report dated August 8, 2003 from Richard Hart, Jr. purported to be owned by Borrowers, or any one of them, are true and correct and Borrowers do, in fact, own such interests in such Collateral. 
  
 6. The Collateral set forth on that certain Engineering Report dated August
8, 2003 from Richard Hart, Jr. is free and clear of all mortgages, liens and encumbrances, except for Permitted Liens. Further, Borrowers have no invoices for labor related to such properties or materials provided to such properties which have not
been paid within 90 days from the date such invoice is due and payable. 
  

 3 

 7. All of each Borrower’s other representations and warranties set forth in Section 8 of the
Agreement, Representations and Warranties, are true and correct on and as of the date hereof with the same effect as though made and repeated by such Borrower as of the date hereof. 
  
 C. CONDITIONS 
  
 Bank’s obligations under the Agreement, as hereby amended, are subject to the following conditions: 
  
 1. Bank and Borrowers shall have executed and delivered this
Amendment. 
  
 2. Borrowers shall have executed
and delivered the Replacement Note. 
  
 3.
Borrowers shall, or will from time to time, have executed such additional mortgages, deeds of trust, financing statement and such other documents as are deemed necessary by Bank in order to perfect a lien in favor of Bank in and to those Oil and Gas
Properties necessary to achieve the percentages required by the covenants set forth herein. 
  
 4. Each Borrower’s representations and warranties set forth in Section B hereof shall be true and correct on and as of the date
hereof, and the date of any subsequent advance with the same effect as though such representation and warranty had been on and as of such date. 
  
 5. Borrowers shall have satisfied all conditions set forth in the Agreement. 
  
 6. As of the date hereof, and the date of any subsequent
Advance, no Event of Default nor any event which, with the giving of notice or lapse of time, would constitute an Event of Default shall have occurred and be continuing. 
  
 D. OTHER NOTICES, COVENANTS AND MISCELLANEOUS TERMS 
  
 1. Bank hereby provides Borrowers with a waiver of those defaults occurring as a result of Borrowers’ (i) violations of
Sections 7.1 of the Agreement, Adjusted Current Ratio, and Section 7.2 of the Agreement, Debt Service Coverage Ratio, occurring at any time prior to June 30, 2003 and (ii) deficiencies in the Borrowing Base occurring prior to June 30,
2003. Provided, however, this waiver is not intended to apply to any default, other than as set forth above nor is it intended to be a waiver of any default occurring in the future due to any violations of the provisions set forth herein or any
other violation or failure to comply with any provision of the Agreement. 
  
 2. Bank hereby notifies Borrowers that until redetermined pursuant to the terms of the Agreement, the Borrowing Base shall be $7,210,000, the Monthly Commitment Reduction shall be in the amount of $90,000.00
(beginning October 1, 2003) and the Half Life shall be 80 months. 
  

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 3. Borrower shall pay by December 15, 2003 (i) an amendment fee of $25,000.00 (payable as additional
consideration for this Amendment), (ii) the $20,000.00 fee required by the Second Loan Modification and Forbearance Agreement and (iii) all other fees and expenses previously accrued including, but not limited to, engineering fees. 
  
 4. Borrowers hereby agree to provide such additional mortgages and title work
pertaining to the Oil and Gas Properties to Bank’s satisfaction within thirty (30) days of any such request by Bank. 
  
 5. Except as expressly amended and supplemented hereby, the Agreement shall remain unchanged and in full force and effect, and the same is hereby ratified
and extended. 
  
 6. The obligations described in the Agreement,
as amended hereby, including but not limited to the indebtedness evidenced by the Note executed in conjunction with the Agreement, shall continue to be secured by the Collateral, without interruption or impairment of any kind. 
  
 7. Borrowers agree to execute such additional mortgages, deeds of trust
and/or amendments to such documents already in place as Bank deems necessary to adequately secure the loan at any time and from time to time hereafter. 
  
 8. The Borrowers hereby agree to pay all reasonable attorney fees and legal expenses incurred by Bank in preparation, execution and implementation of this
Amendment and any mortgages, guaranty agreements, subordination agreements, deeds of trust, security agreements, pledge agreements or any amendments thereto. 
  
 9. This Amendment shall be construed in accordance with and governed by the laws of the State of Oklahoma, and shall be binding on and inure to the
benefit of the Borrower and Bank, and their respective successors and assigns. All obligations of the Borrowers under the Agreement and all rights of Bank and any other holder of the Note, whether expressed herein or in any Note, shall be in
addition to and not in limitation of those provided by applicable law. Borrowers irrevocably agree that, subject to Bank’s sole election, all suits or proceedings arising from or related to the Agreement, as amended, or the Note may be
litigated in courts (whether State or Federal) sitting in Oklahoma City, Oklahoma, and the Borrowers hereby irrevocably waives any objection to such jurisdiction and venue. 
  
 10. This Amendment may be executed in as many counterparts as are deemed necessary or convenient, and it shall not be
necessary for the signature of more than any one party to appear on any single counterpart. Each counterpart shall be deemed an original, but all shall be construed together as one and the same instrument. The failure of any party to sign shall not
affect or limit the liability of any party executing any such counterpart. 
  
 E. RELEASE. Borrowers hereby remise, release, and forever discharge Bank, its successors and assigns, its officers, directors, employees, agents and attorneys (collectively, “Released Parties”) of and from
all actions, causes of action, suits, proceedings, debts, contracts, 

  

 5 

 
claims, damages, liability and demands whatsoever, known or unknown, in law or equity, which Borrowers ever had or now has, by reason of any matter, cause,
or thing whatsoever arising from the actions or inactions of the Released Parties in any matter relating to the Agreement, Note, and other Loan Documents (collectively, “Released Matters”); and Borrowers covenant not to sue any of the
Released Parties with respect to the Released Matters. The release and covenant not to sue set forth in this provision are intended by the parties to be as broad and comprehensive as possible. 
  

 6 

 So executed effective the 31st day of August, 2003. 
  

	 BORROWERS:

	 GMX RESOURCES INC.,

	 an Oklahoma corporation

	
	 /s/ Ken L. Kenworthy, Sr.

	 By:     Ken L. Kenworthy, Sr.

	 Title:  Chief Financial Officer

	 ENDEAVOR PIPELINE INC.,

	 an Oklahoma corporation

	
	 /s/ Ken L. Kenworthy, Sr.

	 By:     Ken L. Kenworthy, Sr.

	 Title:  Chief Financial Officer

	 EXPEDITION NATURAL RESOURCES INC.,

	 an Oklahoma corporation

	
	 /s/ Ken L. Kenworthy, Sr.

	 By:     Ken L. Kenworthy, Sr.

	 Title:  Chief Financial Officer

	
	 BANK:

	 LOCAL OKLAHOMA BANK,

	 formerly known as Local Oklahoma Bank, N.A.

	
	 /s/ John K. Slay, Jr.

	 By:     John K. Slay, Jr.

	 Title:  Senior Vice President

  

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