Thanks for the info. I think I'll at lease replace the chain and based on the articles, possibly the sprockets , depending on how they are worn. Still thinking about the rings....they are right there and easy to get at should the bike start burning oil. I just don't want to have to take the whole thing apart again to get to the chain at some later date.
I ran the bike for about a half mile before disassembly and it was the first airhead I had ever ridden, the first I had ever even seen up close and personal...so as far as knowing what to look for and listen for, I really had no idea.