I am with 52 Carl. I drove 2500 miles in my '51 half ton on a trip from AZ to MO a year ago to Kansas City, and never had a problem filling up at any gas station. I just set the handle at max and let it rip. I also have a '42 half ton and have filled it up at various stations in AZ without a problem.

Now my brand new 2015 Silverado is a different issue. Couldn't even fill it at all. Turned out the vent hose was kinked from the factory!

Check your vent hose and see if you have a problem there.
Kent

1937 Chevy 1/2 ton
1942 Chevy 1/2 ton
1947 Diamond T Model 509
1951 Chevy 1/2 ton
1950 Chevy COE Model 5700 ~ "Barney" ~ And more pix