Hey guys, new to the moped world here. Had a buddy give me his 2010 Jonway 50cc. I had an issue with the idle surging on it own and sometimes stalling out so I decided to Replaced the carb, spark plug, plug wire, fuel filter, and battery. Still surging. Went to the air filter box and found a pin hole leak, so I sealed that up but still surging. Any suggestions? Possible sensor or electrical issue? I have a video but no way of posting until I upload to youtube.