I am about to tear down my '01. I picked up a set of Stage 1 Hotcams and a fresh piston and ring, and I have been having a shifting problem in third. My question is that if I am going to freshen up the motor what valves shoudl I go with. Has anyone had success or lack of with stocks versus aftermarkets like kibblewhites. I am a mediocre rider but I am pretty hard on things at times. I DO NOT want something I need to worry about. Also what about valve guides in these bikes, are thy not an issue, just seats and seals or what? Thanks in advance!