Hi Andy, the first thing I would do, is make sure all your lines, fuel and vacuum, are not leaking or letting air into the system. Second, I would replace any and all fuel filters. A good way to prevent air from getting in and/or fuel from getting out of connections where rubber hoses connect with steel, etc. lines, is to coat the end of the line with Indian Head Shellac, before you snug the clamp. As you know, I'm not a fan of using an electric pump in line with a mechanical pump. I've had too many new or rebuilt fuel pumps go bad, to the point where I've changed out almost all of my Flatheads to use an electric pump as the primary. I do gut the OEM pumps and make them 'pass through', so the OEM pump stays mounted on the intake manifold. I also leave the pushrod in the engine and carry a 'known to be good', if not reliable, mechanical fuel pump in the trunk, in the unlikely event that the electric fuel pump has a problem. Hope you get it squared away and drive the wheels off that '39
