do you leave the gas valve on or do you shut it off when she is parked??? i know that some of these will leak a little when left on and the float bowls will be top off full and they will pop on start. try this routine, when parking her for the night, shut the gas off and blip the throttle once or twice, then shut her off with the key. in the morning, pull your choke, hit the starter and after starting then open the gas line. just try it and see if that does the trick if not then maybe you need a minor adjustment.
