You might check the grease on the bearing ramp inside the clutch. I always remove the orginal grease and re-grease with hi speed wheel bearing grease [synt.]. In order to check grease remove the belts, remove the bolt holding the clutch to arm, pull apart and you will see where the grease should be. When re-installing the clutch be sure to use loctite on the mounting bolt.
Have fun,
Whizzer OuterBanks
Quenton