The right rear brake on my 74 Duster keeps locking up. Every time I use the brake pedal the right rear won't release. It seems to let go if I back up for a few inches. I have had everything replaced from the vacuum booster to the brake shoes. I now have over a thousand bucks in the brakes and am getting fed up! I am thinking about just taking off the automatic adjusters. I remember doing this on a Fury with dragging brakes once about fifty years ago and it solved the problem back then. Any thoughts or comments?