Quadrajet Flooding

Very suddenly, my truck has started flooding when shut down, making starting difficult. I have no signs of a rich mixture when driving, no off idle hesitation, gas smell or low idle. The engine floods immediatly on shutdown, it does not gradually get worse if the truck sits for a minute. It started doing this at the gas station after I had just filled the tanks. I'm thinking float, but I don't have time to check until next week.

when you have the time ,take the carb apart and check the two lead fill in's arent leaking in the center of carb inside. (they sell the kit to fix this for the bowl area