Just wondering how many on here do there own repairs? Im talking about vavle sets/piston replacemant/cam chains/cams etc. Actual rebuilds etc. Ive always done my own work on my XR and now that Ive aquired a 450r Im just looking for experiance etc. I plan on a new piston and rings this winter and I may as well do the cam chain and tensoiner while Im in there? It may also need a vavle job but its apart already so why not? Just looking for anyone that has done this themselves and any hints or tricks that would make the job easier etc. Thanks guys. Going out on Sunday!!