The $10 was a donation/contribution to help launch the program. It was not REQUIRED to have the right to purchase parts. That right came from being a member. One doesn't have to prove the $10 contribution to buy parts from the Manufacturing Fund. The 15% is required if not a member no matter how many times you buy something, and the reason the form requires your KFOCI membership number is to aid in confirming a current member. I am sure Adam checks. Former/non-current members have to add the 15% because, remember, the $10 was only a CONTRIBUTION, not a purchase of the right to buy.