FIRST AMENDMENT TO NET LEASE AGREEMENT


     THIS AMENDMENT TO NET LEASE AGREEMENT, made and entered into
effective as of the 11 day of September, 2000, by and between AEI
Income & Growth Fund XXI Limited Partnership, ("Fund XXI"), whose
principal business address is 1300 Minnesota World Trade  Center,
30  East  Seventh Street, St. Paul, Minnesota 55101  (hereinafter
collectively  referred  to  as "Lessor"),  and  Tumbleweed,  Inc.
(hereinafter  referred to as "Lessee"), whose principal  business
address is 1900 Mellwood Avenue, Louisville, Kentucky;

                          WITNESSETH:

     WHEREAS, Lessor is the fee owner of a certain parcel of real
property  and improvements located at Ellison Road,  Fort  Wayne,
Indiana , and legally described in Exhibit "A", which is attached
hereto and incorporated herein by reference; and

       WHEREAS,   Lessee   has  constructed  the   building   and
improvements  (together  the "Building")  on  the  real  property
described  in  Exhibit "A", which Building is  described  in  the
plans and specifications heretofore submitted to Lessor; and

     WHEREAS,  Lessee and Lessor Fund XXI have entered into  that
certain  Net  Lease Agreement dated March 8, 2000  (the  "Lease")
providing for the lease of said real property and Building  (said
real property and Building hereinafter referred to as the "Leased
Premises"),  from  Lessor upon the terms and  conditions  therein
provided in the Lease;


     NOW,  THEREFORE,  in  consideration  of  the  Rents,  terms,
covenants, conditions, and agreements hereinafter described to be
paid, kept, and performed by Lessee, including the completion  of
the  Building  and  other  improvements constituting  the  Leased
Premises, Lessee and Lessor do hereby agree to amend the Lease as
follows:

1.    Article 2(A) and (B) of the Lease shall henceforth read  as
follows:

ARTICLE 2.     TERM

     (A)   The term of this Lease ("Term") shall be Fifteen  (15)
consecutive  "Lease  Years", as hereinafter  defined,  commencing
September  11,  2000, plus the period commencing  March  8,  2000
("Occupancy  Date") through the effective date hereof,  with  the
contemplated initial term hereof ending on September 30, 2015.

     (B)  The first full Lease Year shall commence on the date of
this First Amendment and continue through September 30, 2001.

2.   Article 4(A) of the Lease shall henceforth read as follows:

ARTICLE 4.  RENT PAYMENTS

     (A)  Annual Rent Payable for the first and second Lease
          Years:  Lessee shall pay to Lessor an annual  Base
          Rent of $132,621.25, which amount shall be payable
          in advance on the first day of each month in equal
          monthly  installments of $11,051.77 to  Fund  XXI.
          If  the  first day of the Lease Term  is  not  the
          first  day  of a calendar month, then the  monthly
          Rent  payable for that partial month  shall  be  a
          prorated  portion of the equal monthly installment
          of Base Rent.

3.   Article  34  is hereby deleted in its entirety;  Lessor  and
     Lessee agree that the referenced Development Financing Agreement
     is terminated in accordance with its terms.  All other terms and
     conditions of the Lease shall remain in full force and effect.

4.   Lessee has accepted delivery of the Leased Premises and  has
     entered into occupancy thereof;

5.   Lessee  has fully inspected the Premises and found the  same
     to be as required by the Lease, in good order and repair, and all
     conditions under the Lease to be performed by the Lessor have
     been satisfied;

6.   As  of this date, the Lessor is not in default under any  of
     the terms, conditions, provisions or agreements of the Lease and
     the undersigned has no offsets, claims or defenses against the
     Lessor with respect to the Lease.

7.   This  Agreement  may  be executed in multiple  counterparts,
     each of which shall be deemed an original and all of which shall
     constitute one and the same instrument.


IN  WITNESS  WHEREOF, Lessor and Lessee have respectively  signed
and sealed this Lease as of the day and year first above written.


                     LESSEE:  Tumbleweed, Inc.,

                              By:/s/ Gregory A Compton
                              Its: Vice President/Secretary






STATE OF KENTUCKY)
                    )SS.
COUNTY OF  JEFFERSON)


     The foregoing instrument was acknowledged before me this 7th
day   of   September,  2000,  by  Gregory  A  Compton,  as   Vice
President/Secretary  of  Tumbleweed,  Inc.,  on  behalf  of  said
corporation.
                     /s/ Donna Sanders
                         Notary Public

                         My commission expires: 8-10-04




          [Remainder of page intentionally left blank]




LESSOR:

                           AEI INCOME & GROWTH FUND XXI LIMITED
PARTNERSHIP

                           By: AEI Fund Management XXI, Inc.
                           By: /s/ Robert P Johnson
                                   Robert P.Johnson, President





STATE OF MINNESOTA  )
                                   )SS.
COUNTY OF RAMSEY    )

     The foregoing instrument was acknowledged before me the 11th
day of September, 2000, by Robert P Johnson, the President of AEI
Fund  Management  XXI,  Inc., a Minnesota corporation,  corporate
general   partner  of  AEI  Income  &  Growth  Fund  XXI  Limited
Partnership, on behalf of said limited partnership.

                              /s/ Barbara J Kochevar
                                  Notary Public

[notary seal]


LEASE AMENDMENT, TUMBLEWEED, FORT WAYNE, INDIANA, ELLISON ROAD