I've been dealing with this issue awhile now and I'm stumped. It's been rebuilt twice. Once by myself and then again by a pro carb fellow. I've installed an electric fuel pump and a pressure regulator. No matter what I've done the carb dumps fuel into the manifold and all down the outside of the carb at the middle gasket. Engine is a 235 and it's in my 46 half ton. I installed the electric pump just in case the stock mechanical pump was the issue. I've set the Mr. Gasket fuel pressure regulator to 1 and still dumps fuel. I think the regulator is a joke personally. I don't know how it would run on 1 psi. That's where I'm at and I'm frustrated. Any input is appreciated.
Bob


1946 Chevy 1/2 ton "patina" pickup with a 1953 235 engine, otherwise all stock and unmolested!