Ok, I've got about 55 hours on my '05 and the valves were in spec as of 8 hours ago (gonna re-check them this week when I replace the cam chain), but I've got a bit of a vibration, not a noise or banging, but a vibration directly related to rpm and indifferent to forward speed or clutch dis/engagement. I've checked the flywheel and woodruff key, and they looked like new. I've checked the clutch all the way to the clutch boss, and the primary drive gear and balancer drive gear. I'm planning on pulling the cams and changing the cam chain (and possibly tensioner) this week. I'm at a loss as to where this vibe is coming from. The best way I can explain it is that it feels like "something" is loose and transmitting a shaking motion thru the bike when you rev it. It runs strong, starts fine, etc etc....just shakes with excessive engine vibes. This started about 10 hours ago, but I wasn't sure of it until I rode a friend's 05 and knew right away I had excessive vibes. If the cam chain and tensioner aren't the blame, the only thing I can think of after that is the wrist pin bearing....... any suggestions would be appreciated!! Thanks!