Hello, I just bought 2000 yz 426 and seems to be in good shape except for rear wheel bearings.(that is in my other post:foul: ) anyway I have read about the450 cam mode and wandering what I should replace along with cam. It starts good now, but I have yet to get it hot and try to start. I have been reading post for days and everybody says to check the valves and change the oil so I figured I would start there. I thought why I was there I might as well put 450 cam in, since everybody on here has good things to say about the cam swap or should I just ride it like it is for a while? What do you guys think?