I have a 1956 f100, 272, 2bbl, when i turn it off fuel seeps out of the bottom of the carb. I thought it was a carb problem, so I ordered a nice rebuild from the folks at vintage speed. Same problem still exists. I changed my fuel pump to a holley mechanical, which puts out 7.5 lbs of pressure, could this be my problem, too much pressure?

 I'm on a Lowwwww Budget