i tryed the spraying of the head and base gaskets and nothing i sprayed the carb boots and nothing. when its running i can pull the choke and it revs down to normal but when u let go it just revs up. and another thing when it running it just revs up higher and higher now until i kill it. i took the head off and the head gasket is fine. but the pistons were really black. the head didnt have any problems tho. its got 125 on the left and 135 on the right but u can turn it over with ur hand really easy. unless it is the base gasket i dunno. i havent checked it yet. i really need help.