EXHIBIT 4.4(b)

                                 AMENDMENT NO. 1
                                       TO
                                 LOAN AGREEMENT



     THIS  AMENDMENT,  dated  as of the 13th day of May,  2002,  by and  between
Tecstar,  LLC, an Indiana limited  liability company  ("Company"),  and Comerica
Bank, a Michigan banking corporation ("Bank");

                                   WITNESSETH:

     WHEREAS, Company and Bank desire to amend that certain Loan Agreement dated
as of February 13, 2002, entered into by Company and Bank ("Agreement");

     NOW, THEREFORE, it is agreed that the Agreement is amended as follows:

     1. The first sentence of Section 1.1 of the Agreement is amended to read in
its entirety as follows:

     "Subject to the terms of this Agreement,  Bank agrees to lend to Company at
any time and from time to time from the  effective  date  hereof  until April 1,
2004  sums not to  exceed  under  the line of  credit  Fifteen  Million  Dollars
($15,000,000) in aggregate principal amount at any one time outstanding."

     2. The first sentence of Section 1.5 of the Agreement is amended to read in
its entirety as follows:

     "Company  shall  pay to Bank an  unused  fee  equal to one  quarter  of one
percent (1/4%) per annum multiplied by the average daily amount by which Fifteen
Million  Dollars  ($15,000,000)  exceeds  the  aggregate  amount of  outstanding
advances under the Line Note."

     3. The first sentence of Section 1.6 of the Agreement is amended to read in
its entirety as follows:

     "In  addition to advances  under the Line Note to be provided to Company by
Bank under and  pursuant to Section 1.1 of this  Agreement,  Bank may issue,  or
commit to issue, from time to time, standby letters of credit for the account of
Company  (herein  individually  called a "Letter  of  Credit"  and  collectively
"Letters of Credit") in  aggregate  undrawn  amounts not to exceed Five  Hundred
Thousand Dollars ($500,000) at any one time outstanding;  provided, however that
the sum of the aggregate amount of advances outstanding under the Line Note plus
the undrawn  amounts of all Letters of Credit shall not exceed  Fifteen  Million
Dollars  ($15,000,000)  at any one time; and provided  further that no Letter of
Credit shall,  by its terms,  have an expiration  date which extends  beyond the
maturity date of the Line Note."

<PAGE>

     4.  Section  4.1(c) of the  Agreement is amended to read in its entirety as
follows:

     "(c) within twenty (20) days after and as of the end of each month,  agings
          of accounts  receivable and accounts payable and an inventory  report,
          each in form satisfactory to Bank;"

     5. The first  sentence and the table in Section 4.13 of the  Agreement  are
amended to read in their entireties as follows:

     "4.13Maintain  at all  times,  a  Tangible  Net  Worth of not less than the
          following amounts during the periods specified below:

         March 31, 2002 through June 29, 2002                            $0
         June 30, 2002 through September 29, 2002                  $500,000
         September 30, 2002 through December 30, 2002            $1,000,000
         December 31, 2002 through March 30, 2003                $1,500,000
         March 31, 2003 through June 29, 2003                    $2,000,000
         June 30, 2003 through September 29, 2003                $2,500,000
         September 30, 2003 through December 30, 2003            $3,000,000
         December 31, 2003 through March 30, 2004                $3,250,000
         March 31, 2004 and thereafter                           $3,500,000"

     6. The first  sentence and the table in Section 4.14 of the  Agreement  are
amended to read in their entireties as follows:

     "4.14Maintain at all times,  Working Capital of not less than the following
          amounts during the periods specified below:

         March 31, 2002 through June 29, 2002                   ($2,750,000)
         June 30, 2002 through September 29, 2002               ($2,500,000)
         September 30, 2002 through December 30, 2002           ($2,250,000)
         December 31, 2002 through March 30, 2003               ($2,000,000)
         March 31, 2003 through June 29, 2003                   ($1,750,000)
         June 30, 2003 through September 29, 2003               ($1,500,000)
         September 30, 2003 through December 30, 2003           ($1,250,000)
         December 31, 2003 through March 30, 2004               ($1,000,000)
         March 31, 2004 and thereafter                            ($750,000)"

     7.  Exhibits  "A" and "B" to the  Agreement  are  amended  to read in their
entireties in the forms annexed hereto as Exhibits "A" and "B", respectively.


     8. Company hereby  represents and warrants that, after giving effect to the
amendments  contained  herein,  (a) execution,  delivery and performance of this
Amendment and any other documents and instruments  required under this Amendment
or the Agreement are within Company's  limited  liability  company powers,  have
been duly authorized,  are not in contravention of law or the terms of Company's
Articles of Organization or Operating Agreement,  and do not require the consent
or approval of any governmental body,  agency, or authority;  and this Amendment
and any other  documents and  instruments  required  under this Amendment or the
Agreement,  will be valid and binding in  accordance  with their terms;  (b) the
continuing  representations  and warranties of Company set forth in Sections 3.1
through 3.5 and 3.7 through 3.14 of the Agreement are true and correct on and as
of the date  hereof with the same force and effect as made on and as of the date
hereof;(c) the continuing representations and warranties of Company set forth in
Section  3.6 of the  Agreement  are true and  correct as of the date hereof with
respect to the most recent financial statements furnished to the Bank by Company
in accordance with Section 4.1 of the Agreement; and (d) no event of default, or
condition or event which,  with the giving of notice or the running of time,  or
both, would constitute an event of default under the Agreement, has occurred and
is continuing as of the date hereof.
<PAGE>

     9. This  Amendment  shall be effective upon (a) execution of this Amendment
by  Company  and Bank,  (b)  execution  and  delivery  by  Company  to Bank of a
$15,000,000 Line Note in the form of Exhibit "A" annexed hereto, and (c) payment
by Company to Bank of a non-refundable amendment fee in the amount of $10,000.

     10.  Except as  modified  hereby  all of the terms  and  conditions  of the
Agreement shall remain in full force and effect.

     WITNESS the due execution hereof on the day and year first above written.

COMERICA BANK                                     ECSTAR, LLC


By: /s/ Michael H. Cliff                          By: /s/ Jeffrey P. Bietzel
   -----------------------------------               ---------------------------
      Michael H. Cliff                               Jeffrey P. Bietzel

Its: Vice President                               Its:    President


                                                  By: /s/ Michael H. Schoeffler
                                                     ---------------------------
                                                      Michael H. Schoeffler

                                                   Its: Chief Financial Officer

<PAGE>
                                   EXHIBIT "A"

                                    LINE NOTE


$15,000,000                                                    Detroit, Michigan
                                                                 April ___, 2002


     On or before April 1, 2004, FOR VALUE RECEIVED,  the undersigned,  Tecstar,
LLC, an Indiana limited liability company (herein called "Company")  promises to
pay to the order of COMERICA BANK, a Michigan banking corporation (herein called
"Bank")  at its Main  Office at 500  Woodward  Avenue,  Detroit,  Michigan,  the
indebtedness or so much of the sum of Fifteen Million Dollars  ($15,000,000)  as
may from time to time have been advanced and then be  outstanding  hereunder and
under a certain Loan  Agreement by and between  Company and Bank dated  February
13, 2002 (as may be amended from time to time, the "Loan Agreement").

     The indebtedness  outstanding  under this Note from time to time shall bear
interest  at a per annum rate equal to the Bank's  Prime Rate plus or minus,  as
applicable,  the Applicable Margin (as defined in the Loan Agreement).  Upon the
occurrence  of any  event of  default  hereunder  or under  the Loan  Agreement,
interest shall accrue on the unpaid balance  hereunder at a per annum rate equal
to three  percent  (3%) above the rate  otherwise in effect.  Interest  shall be
payable monthly on the unpaid  principal  balance from time to time  outstanding
commencing on May 1, 2002 and on the first business day of each month thereafter
until April 1, 2004 when the entire  unpaid  balance of  principal  and interest
shall be due and  payable.  Interest  shall be computed on a daily basis using a
year  of 360  days  for  the  actual  number  of  days  elapsed,  and,  in  such
computation,  effect shall be given to any change in the interest rate resulting
from a change in the Prime  Rate on the date of such  change in the Prime  Rate.
"Prime  Rate" shall mean the rate of interest  established  by Bank and publicly
announced as its prime rate as the same may be changed from time to time,  which
may not necessarily be Bank's lowest rate for loans. This Note may be prepaid at
any time without premium or penalty.

     This Note evidences borrowing under, is subject to, is secured pursuant to,
shall be prepaid in accordance  with,  and may be matured under the terms of the
Loan Agreement,  to which reference is hereby made. As additional security, Bank
is granted a lien on all personal  property and assets  (including  deposits and
other  credits) of Company at any time in possession or control of (or owing by)
Bank for any purpose.

<PAGE>

     All  agreements  between  Company and Bank  pertaining to the  indebtedness
described herein are expressly  limited so that in no event whatsoever shall the
amount of interest  paid or agreed to be paid to Bank exceed the highest rate of
interest   permissible   under  applicable  law.  If,  from  any   circumstances
whatsoever, fulfillment of any provision of the Loan Agreement, this Note or any
other  instrument  securing  this  Note or all or any  part of the  indebtedness
secured  thereby,  at the time performance of such provision shall be due, shall
involve  exceeding  the interest  limitation  validly  prescribed by law which a
court of competent jurisdiction may deem applicable hereto, then, the obligation
to be  fulfilled  shall be reduced to an amount  computed at the highest rate of
interest  permissible  under  such  applicable  law,  and  if,  for  any  reason
whatsoever,  Bank shall ever receive as interest an amount which would be deemed
unlawful under such applicable law, such interest shall be automatically applied
to the payment of the principal  amount  described  herein or otherwise  owed by
Company to Bank, (whether or not then due and payable) and not to the payment of
interest.

     Company hereby waives presentment for payment,  demand,  protest and notice
of dishonor and nonpayment of this Note and agrees that no obligation  hereunder
shall  be  discharged  by  reason  of any  extension,  indulgence,  release,  or
forbearance  granted  by any  holder of this Note to any party now or  hereafter
liable  hereon or any  present  or  subsequent  owner of any  property,  real or
personal,  which is now or hereafter security for this Note. Any transferees of,
or endorser,  guarantor or surety  paying this Note in full shall succeed to all
rights  of Bank,  and Bank  shall be  under no  further  responsibility  for the
exercise  thereof or the loan evidenced  hereby.  Nothing herein shall limit any
right granted Bank by other instrument or by law.

     If the interest and principal  hereof are not fully paid at maturity hereof
(whether by acceleration or otherwise),  Company shall pay the holder hereof all
its reasonable costs of collection of said principal and interest including, but
not limited to, reasonable attorney fees.

     THE UNDERSIGNED AND THE BANK ACKNOWLEDGE THAT THE RIGHT TO TRIAL BY JURY IS
A CONSTITUTIONAL  ONE, BUT THAT IT MAY BE WAIVED.  EACH PARTY,  AFTER CONSULTING
(OR  HAVING HAD THE  OPPORTUNITY  TO  CONSULT)  WITH  COUNSEL  OF THEIR  CHOICE,
KNOWINGLY  AND  VOLUNTARILY  AND FOR THEIR MUTUAL  BENEFIT,  WAIVES ANY RIGHT TO
TRIAL  BY  JURY  IN  THE  EVENT  OF  LITIGATION  REGARDING  THE  PERFORMANCE  OR
ENFORCEMENT OF, OR IN ANY WAY RELATED TO THIS NOTE.

     Notwithstanding  anything  herein to the contrary,  nothing shall limit any
rights granted Bank by other instruments or by law.

     This Note replaces by renewal and increases that certain  $10,000,000  Line
Note dated February 13, 2002 made by Company payable to Bank.

                                          TECSTAR, LLC


                                          By:
                                             -----------------------------------
                                                   Jeffrey P. Bietzel
                                          Its:     President


                                          By:
                                             -----------------------------------
                                                   Richard J. Mullin
                                          Its:     Chief Financial Officer