After taking William Henri's advice on ebay searching for engine parts, I ran across this site that I thought others might be interested in:
http://listings.ebay.com/aw/plistings/category34056/index.html?from=R11
This is a site that is in the "hobby aircraft" section of ebay for parts. Lots of good stuff listed. A lot of RC stuff, but also right now a bunch of veco gaskets sets and other stuff relavent to control line.
John Ramsey