Changing the clutch in an 01----5.9 diesel----NV4500. I did this clutch about 8 years ago and had to have the input gear replaced b'cuz of the pilot bearing going south and grinding up the pilot on the gear. Got it apart this afternoon and the same thing. Pulled the flywheel off and here comes all the dust...look at the input--yep--toast again. Been searching for a bushing, but so far a no bueno.........anybody?