I just made the same brake change, power dual low mounted power brake unit with disc in front and drums in rear. Mine also holds the brake on for about 30 seconds after I release the pedal. After that time the brakes will free up. I've noticed that even the brake light will stay on for a short time after I release the brakes. I have a 2 lb residual valve in front discs and a 10 lb to the drums. Any thoughts?
Should the brake arm be modified from the 6 to 1 manual ratio to a 3 or 4 to one ratio? In other words redrilled lower in the brake arm.
