Im running a husang 4 stroke with less then 200 km on it i parked it for about 10 days when parked was running perfect after would only run with the choke full on check for an air leak it seems like I had one I replaced the gaskets now with the gaskets on it won't run at all I take the gaskets off and it will only run with the choke on the gas will not flow from the gas tank to the carburetor but it flows free if I pull it off the carburetor the carbs been soaking solvent overnight and cleaned and confused about it I have primed it and it will run as long as you know the gas that I threw in once that gas is gone it shuts off again any ideas