Gas Shutoff Valve

[nabbess1930]

I have a 1930 Model A pickup and can not get the carburetor to stop leaking gas over time. I always shut off the fuel and then let the truck run until the carb runs out of fuel.

I have replaced the shutoff valve with 2 different new valves from Snyder's and will still have leakage after the truck sits for a few days.

Any suggestions?

Thanks!