I picked up what I think is a '99 Whizzer yesterday. The seller was none too sure even though he had the bike for 15yrs. or more.Its been.....er-worked on....Side cover is off, camshaft was stuck in the outer case bearing. I got that out ok. What I did find is that the crankshaft weight has been rubbing against the inside of the case. The PO mentioned a "noise" in the engine...he obviously had the engine apart. Any ideas what went wrong? I work on all sorts of mechanical things but never looked at a Whizzer motor. bike motor I.D. is WME005586. Tag on frame says RHAWMC189X P005586.Thanks for any help.