Has this truck been sitting for some time?

It almost sounds like some of the wheel cylinder pistons might be stuck (and not applying that shoe)...

Also, make sure the shoes are properly adjusted...

Frank McMullen
1941 Chevy dump truck
1949 GMC 100 pick-up
1954 Chevy 3600 pick-up
1955.1 4400 dump truck
1941 De Soto & other MoPars
1928 Model A F**D Special Coupe