Personal rebuild of carbs all new jets and gaskets synced with gauges. Excellant spark. Problem! Fuel is drowning plug and flowing out of exhaust weep hole 4 into 4 exhaust. Had the carbs off 4 times adjusted float, checked valve with compressed air, checked floats for leaks. all good. Changed plugs. Any suggestions welcome, could it be open exhaust valve ? when hot at 4-5k rpm Top breather is also fuming heavy. Concerned that gas is contaminating oil with blow bye.
