Seems I have a bit of a challenge here. And most definitely need advice. A friend rebuilt it , new rod jugall but the head. The solenoid was gone and it had a push button instead. It will run but have to pull it. It seams that it isn't getting power to the ignition until its turning over fast enough for the starter to power ignition. And backfires at low rpm sometimes.it will stay running keeping reved up and runs good. Got good power to no backfire at all till low rpm then it will die. It has chugged but rarely by the starter seams all wireing is good other than the headlight and taillight are gone and the neutral light flashes when whirling it over any ideas.