<PAGE>

THIS AMENDED AND RESTATED LINE OF CREDIT NOTE AMENDS AND RESTATES, BUT DOES NOT
REPAY, EFFECTIVE AUGUST 30, 2001, THE LINE OF CREDIT NOTE DATED MARCH 31, 2000
FROM MORO ACQUISITION CORP. TO SOVEREIGN BANK IN THE STATED PRINCIPAL AMOUNT OF
$1,250,000.00


                    AMENDED AND RESTATED LINE OF CREDIT NOTE
                    ----------------------------------------

$1,500,000.00                                     Bala Cynwyd, Pennsylvania
                                                  August 30, 2001


         FOR VALUE RECEIVED, without defalcation, J.M. AHLE CO., INC. (f/k/a
Moro Acquisition Corp.), a Delaware corporation ("Maker"), in accordance with
the terms and conditions set forth below, hereby promises to pay to the order of
SOVEREIGN BANK (the "Bank"), the principal sum of One Million Five Hundred
Thousand Dollars ($1,500,000.00) or such lesser amount as may be advanced to
Maker, in lawful money of the United States of America, together with interest
thereon at an annual rate equal to the "Prime Rate" (as defined herein) plus
one-half percent (.50%); provided, however, that the credit availability
evidenced by this Note shall not exceed in the aggregate the Borrowing Base (as
defined in the Loan Agreement [as defined herein]), less the sum of the then
unpaid principal amount of all previous Advances (as defined in the Loan
Agreement).

         (a) The "Prime Rate" is the floating annual rate of interest that is
announced from time to time by the Bank as the Prime Rate and is used by the
Bank as a reference base with respect to different rates charged to borrowers.
The Prime Rate shall change simultaneously and automatically upon the Bank's
designation of any change in such Prime Rate. The Bank's determination and
designation from time to time of the referenced rate shall not in any way
preclude the Bank from making loans to other borrowers at a rate which is higher
or lower than or different from the Prime Rate.

         (b) Interest shall be due and payable monthly in arrears commencing
September 1, 2001 and continuing on the first day of each month thereafter until
the Bank's credit availability evidenced by this Note has expired or been
terminated, and the principal amount of and all accrued interest with regard to
this Note have been paid in full (it being understood that interest shall again
accrue upon any subsequent borrowing under the Line of Credit).

         (c) Interest shall be computed on the basis of a 360-day year for the
actual number of days elapsed (365/360 or 366/360 as appropriate).


         (d) Principal shall be due and payable as follows:

                  (i) if the unpaid balance of this Note exceeds the limitations
set forth above, at any time, then within three (3) Business Days (as defined in
the Loan Agreement) after notification from the Bank, but only as to such
excess,


<PAGE>

                  (ii) in full on the earlier to occur of an Event of Default or
June 30, 2002.

         (e) Upon the occurrence of a default hereunder, which default remains
uncured after five (5) days notice to Maker from the Bank, the rate of interest
shall be increased to a rate equal to two percent (2%) above the Prime Rate,
payable on the date of default (the "Default Rate"). Interest at the rate
provided for herein, or the Default Rate, shall continue to accrue at such rate,
and continue to be paid even after default, maturity, acceleration, recovery of
judgment, bankruptcy or insolvency proceeding of any kind.

         (f) If any of the aforesaid payments of interest shall become overdue
for a period in excess of ten (10) days, Maker shall pay the Bank a "late
charge" of five percent (5%) of the monthly interest payment then past due.

         (g) All payments of principal and interest with regard to this Note
shall be made in lawful money of the United States of America in immediately
available funds at the Bank's office at 1130 Berkshire Boulevard, Wyomissing,
Pennsylvania 19610 or at such other place as the Bank shall designate in
writing.

         (h) Maker shall not be obligated to pay and the Bank shall not collect
interest at a rate in excess of the maximum permitted by law or the maximum that
will not subject the Bank to any civil or criminal penalties. If, because of the
acceleration of maturity, the payment of interest in advance or any other
reason, Maker is required, under the provisions of the Loan and Security
Agreement dated March 31, 2000, as amended (the "Loan Agreement"), to pay
interest at a rate in excess of such maximum rate, the rate of interest under
such provisions shall immediately and automatically be reduced to such maximum
rate, and any payment made in excess of such maximum rate, together with
interest thereon at a rate provided herein from the date of such payment, shall
be immediately and automatically applied to the reduction of the unpaid
principal balance of this Note as of the date on which such excess payment is
made. If the amount to be so applied to reduction of the unpaid principal
balance exceeds the unpaid principal balance, the amount of such excess shall be
refunded by the Bank to Maker.

         (i) Notwithstanding the face amount of this Note, the liability of the
Maker under this Note shall be limited at all times to the unpaid principal
amount of, all accrued unpaid interest on, all late charges with respect to, and
all costs incurred in the collection of any sum due under and in connection with
the Line of Credit Facility (as provided in Section 2.1 of the Loan Agreement)
and as reflected on the records of the Bank.

         (j) This Note is the Note referred to in Section 2.2 of the Loan
Agreement and is entitled to all the benefits of such Loan Agreement and all the
security referred to therein. In the event of a conflict between the terms of
this Note and the terms of the Loan Agreement, the terms of the Loan Agreement
shall control.

         (k) All of the agreements, conditions, covenants, provisions and
stipulations contained in the Loan Agreement which are to be kept and performed
by Maker are hereby made a part of this Note to the same extent and with the
same force and effect as if they were fully set forth herein, and Maker
covenants and agrees to keep and perform them, or cause them to be kept and
performed, strictly in accordance with their terms.

                                       2
<PAGE>

         (l) Upon the occurrence of an Event of Default as that term is defined
in Article 8 of the Loan Agreement, then, and in such event, the Bank may
declare this Note to be due and payable, whereupon the entire unpaid balance of
principal, together with all accrued interest thereon, shall become immediately
due and payable without presentment, demand, protest or other notice of any
kind, all of which are hereby expressly waived, anything herein or in the Loan
Agreement to the contrary notwithstanding.

         (m) UPON THE OCCURRENCE OF AN EVENT OF DEFAULT AS THAT TERM IS DEFINED
IN ARTICLE 8 OF THE LOAN AGREEMENT, MAKER HEREBY IRREVOCABLY AUTHORIZES AND
EMPOWERS THE PROTHONOTARY OR ANY ATTORNEY OF ANY COURT OF THE COMMONWEALTH OF
PENNSYLVANIA TO APPEAR AT ANY TIME FOR MAKER IN ANY ACTION BROUGHT AGAINST MAKER
ON THIS NOTE AT THE SUIT OF THE BANK, WITH OR WITHOUT DECLARATION FILED, AS OF
ANY TERM, AND THEREIN TO CONFESS OR ENTER JUDGMENT AGAINST MAKER FOR THE ENTIRE
UNPAID PRINCIPAL OF THIS NOTE AND ALL OTHER SUMS PAYABLE BY OR ON BEHALF OF
MAKER PURSUANT TO THE TERMS OF THIS NOTE OR THE LOAN AGREEMENT, AND ALL
ARREARAGES OF INTEREST THEREON, TOGETHER WITH COSTS OF SUIT, REASONABLE
ATTORNEY'S COMMISSION FOR COLLECTION OF THE TOTAL AMOUNT THEN DUE BY MAKER TO
THE BANK (BUT IN ANY EVENT NOT LESS THAN THREE THOUSAND DOLLARS ($3,000.00)),
AND FOR SO DOING THIS NOTE OR A COPY HEREOF VERIFIED BY AFFIDAVIT SHALL BE A
SUFFICIENT WARRANT. THE AUTHORITY GRANTED HEREIN TO CONFESS JUDGMENT SHALL NOT
BE EXHAUSTED BY ANY EXERCISE THEREOF BUT SHALL CONTINUE FROM TIME TO TIME AND AT
ALL TIMES UNTIL PAYMENT IN FULL OF ALL AMOUNTS DUE HEREUNDER.

         (n) The remedies of the Bank as provided herein or in the Loan
Agreement, and the warranties contained herein or in the Loan Agreement, shall
be cumulative and concurrent, and may be pursued singly, successively, or
together at the sole discretion of the Bank, and may be exercised as often as
occasion therefor shall occur; and the failure to exercise any such right or
remedy shall in no event be construed as a waiver or release thereof.

         (o) Maker hereby waives and releases all errors, defects and
imperfections in any proceedings instituted by the Bank under the terms of this
Note or of the Loan Agreement, as well as all benefit that might accrue to Maker
by virtue of any present or future laws exempting any property, real or
personal, or any part of the proceeds arising from any sale of any such
property, from attachment, levy, or sale under execution, or providing for any
stay of execution, exemption from civil process, or extension of time for
payment; and Maker agrees that any real estate that may be levied upon pursuant
to a judgment obtained by virtue hereof, on any writ of execution issued
thereon, may be sold upon any such writ in whole or in part in any order desired
by the Bank.


                                       3
<PAGE>

         (p) Maker and all endorsers, sureties and guarantors hereby jointly and
severally waive presentment for payment, demand, notice of demand, protest and
notice of protest of this Note, and all other notices in connection with the
delivery, acceptance, performance, default, or enforcement of the payment of
this Note, and they agree that the liability of each of them shall be
unconditional, without regard to the liability of any other party, and shall not
be affected in any manner by any indulgence, extension of time, renewal, waiver
or modification granted or consent to any and all extensions of time, renewals,
waivers, or modifications that may be granted by the Bank with respect to the
payment or other provisions of this Note, and to the release of the collateral
or any part thereof, with or without substitution, and agree that additional
makers, endorsers, guarantors, or sureties may become parties hereto without
notice to them or affecting their liability hereunder.

         (q) The Bank shall not be deemed, by any act of omission or commission,
to have waived any of its rights or remedies hereunder unless such waiver is in
writing and signed by the Bank, and then only to the extent specifically set
forth in the writing. A waiver on one event shall not be construed as continuing
or as a bar to or waiver of any right or remedy to a subsequent event.

         (r) This instrument shall be governed by and construed according to the
domestic internal laws (but not the law of conflict of laws) of the Commonwealth
of Pennsylvania.

         (s) Whenever used, the singular number shall include the plural, the
plural the singular, the use of any gender shall be applicable to all genders,
and the words the "Bank" and "Maker" shall be deemed to include the respective
successors and assigns of the Bank and Maker.

         (t) Any provision contained in this Note which is prohibited or
unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective
to the extent of such prohibition or unenforceability, without invalidating the
remaining provisions hereof and any such prohibition or unenforceability in any
jurisdiction shall not invalidate or render unenforceable such provision in any
other jurisdiction.

         IN WITNESS WHEREOF, Maker, intending to be legally bound hereby, has
caused this Note to be duly executed by an authorized officer, and its corporate
seal to be affixed and attested, the day and year first above written.

                                          J.M. AHLE CO., INC. (f/k/a Moro
                                          Acquisition Corp.)


                                          By: /s/ David W. Menard
                                             ----------------------------------
                                                   David W. Menard, President


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