Thanks Mr Matt... You are correct. The wheel does not turn freely so Im guessing the bearings are gone. There's no one to blame but myself as I ran 2 stroke oil early on. When the 100 first came out there was wide spread rumor that 2 stk oil was ok. Well KT never made that claim and went as far at put it in writing.. to late for me though. lol But Now I can get the upgraded compressor wheel done at the same time