I have a '97 softtail that has a high pitched noise coming out of lower engine area that is driving me nutz. Steady throttle or during acceleration brings it on but if I roll off it ever so slightly it diminishes or backing out of it will stop it entirely. Thought it sounded like the belt was rubbing against the retaining lips on the rear sprocket but have adusted the run till I don't think it is that, slight wobble of the sprocket would account for the screech-screech-screech that speeds up with increase of speed. I had the primary chain inspection/adjusting cover off and it appears that the chain is out of adhustment, 35,000 on chain. Any thing down in there that could be rubbing intermittenly? If I take the whole cover off am I going to lunch the gasket? Any ideas? Thanks