My bike is a 2007 Zx-10 with 40k miles. I took my bike in last week for the full service and valve adjustment. My mechanic called me and said that the cams are completely messed up and need to be replaced. He states that its a Manufacturing Defect. He informed me of this additional Unlimited mile warranty from kawasaki offers for parts like the cams. My question to you guys is does this Unlimited mile warranty exist? My limited warranty ended about 2 years ago.