Here's my issue...brand new motor, third one so I know the basics at least but darmeat thing. No matter what I do there doesn't seem to be a spark first problem second problem is I can push the bike even with the clutch down way easier than k could with any other bikes. Changed cdi spark and magneto. Took piston out to turn it around since from shipper the arrow was facing the intake so there shouldn't be an air leak on the top end. I'm lost. Help please.