OK, new to this site. Decided to join on because my sister had a friend of hers add a two stroke motor to her bike. Reason is, she has no license and needs a cheap way to get around locally. Problem...he is kind of a "HACKER"! End result, the thing slipd in and out of gear, randomly. Sounds like the clutch may need adjustment. Haven't messed with one of these before. Any suggestions?