i recently rebuilt my force 90 i didnt, mess with the timing and it was running fine when i bustd the rings.. its together right.<br />but from the time the timing advance thing touches the carblever the timing advance slider up by the stator is all the way over as far as it will go and the throttles anly 1/4 open. is this wrong. i tryed to start it and it backfires and want start when i spray gas in my carbs. do i need to have the stator sliding thing all the way slide back towards closed throttle to start it or halfway thru its motion??