YZ 450 08. Intake cam cannot turn by hand. Can move w/ screw driver placed in gear teeth. Tensioner is released. Exhaust cam moves easily. Cam journal has minimal marks, does not look burnt or discolored. Thought cam would get looser with use not tighter. Fear jumping cam chain. Need to sell bike and do not want to just pass on problem. 7ftlb torque. Bike has a ton of hours on it.