B carburetor fuel leak

[Ten1nis]

My Zenith B carburetor left me on the side of the road recently. I cleaned the carb and blew it out with an air compressor. My truck now runs better than ever. I replaced all the gaskets with new ones from Sniders.
After driving it I always close the in-line valve and run the engine until it dies. Gasoline leaks from the throat of the carburetor, (a very small amount) each time. Any ideas?

 

[lrf]

I know with "A" zenith carbs if the float is adjusted too high gas will dribble out of the jets located in the throat. Something to consider. Enjoy your "A". LRF