Put a fuel gauge on the fuel line between the regulator and the carburetor.
In the immortal words of HRL, "test, don't guess."
(I'm pretty sure that it is proper to use, "in the immortal words of", if that person is not dead yet. Please correct me if I am wrong.)

1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission