Holley 1920 carb issues!

Thanks for all the advice. I didn't realize the fuel pumps made for these cars wouldn't be putting out the correct pressure for the carburetors used on our darts. I will have to stop by the auto parts store and pick up a gauge. So three pounds is correct for this carb then?

I do have a thicker gasket too,when I installed the carburetor I reused the original since it was in perfect condition.Guess I should go in an change that out too.