Marc,
You are correct, they can't fix much, the dealers won't even overhaul a carb, they will just swap it out with a new one. Vintage to the Japanese is ten year old. I have a kawasaki estrella 1992 to which I added
some BSA and Enfield bits, the Japanese think it is some kind of brit or Italian ride. What makes it worse is that the Estrella has been in production since 91. The motor would be a good swap project except it
has no kick start.