[weq92f]

I drove 4 wheel drums on a 68 stepper for years without incident. This required regular adjustment and failing components had to be replaced immediately.

After you swap out the bad shoes, bad soft lines and any other components that need replacement, bleed properly and then adjust each corner so that you do have the shoes dragging somewhat on the drums ( wheel should not spin freely, nor should it stop immediately ). Go drive and flog the brakes very hard repeatedly to bring them up to temp and bed the shoes onto the drums well. After they cool off, adjust again. Might take a few cycles of this to get them where they need to be initially after replacing all the shoes/drums.

Make sure your master cylinder plunger isn't allowing fluid to pass by it: attempt to gain more pedal by quickly pumping the brake pedal. If that works, you need a new master.

Hth,

-klb