For those of you in touch with my previous post:
I completely swapped engine, carb, intake, EVERYTHING related to the engine over from my 30mph M1 to my 20mph Cady. It still goes like 20!
Wondering if it was a clogged exhaust, I loosened it from the cylinder a juust a little to let some more air out. Didn't do much but make it slightly louder.
My only idea is the rear sprocket is 1in bigger than on the Cady. The sprocket holes on the cady are different than the M1, so I can't swap them. Would that _really_ make that much of a difference?
What else could be causing this??