theres a BMW shop somewheres around tampa area. I passed it one day on my way to whatever the hell that road is everyone always wads up on thats supposed to be 'the shit'. I would call and just talk to a mechanic over the phone. Does he have a shop manual? Maybe pick on up or do some googling and find one for download like on a BMW forum Usually they have troubleshooting guides in the front or back, but im not sure if this would be described in there. Yeah there is no chain, its shaft driven, but the principals behind the tranny and clutch are most likely the same to that of sport bikes and other motorcycles.