When I bought my 2001 Kitfox project I didn't notice that there wasn't an original Bill of Sale from Skystar in all the paperwork. Although I have the original kit invoice from the original owner I understand that this is not accepted by the FAA as proof of purchase. Kitfox has provided a letter on their current website stating that Skystar is no longer in business and as a result they are not able to provide an original Bill of Sale. They state that this letter should be provided to the FAA as a substitute for the missing Bill of Sale. I have official Bills of Sale from the previous owners, just not the original from Skystar Has anyone used this letter that Kitfox provides on their website as a substitute for a missing original Bill of Sale, and has the FAA accepted or rejected it?