You need to measure the the cab-to-frame gaps at all four corners. Eyeballing them won't cut it. They need to be within the specs called for in The Manual. A slight variation in the cab position will cause a significant variation in the position of the front clip. Make sure that your front cab mount supports are sound and not collapsed. Make sure that the rear cab mounts have sound rubber in them.
Carl


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