got a little problem , my 58 willys wagon wont stay running. it has a 350 new carb manifold fuel pump and a fuel tank from a camaro . it will start somtimes stay running sometimes not . im about to drop the tank to investigate . i have noticed that the fuel in the fitler has air bubbles and starts to dribble back down the fuel line after i stop cranking it over anyone had this problem or got an idea ???