So the rear monte carlo disc brake conversion has been mounted on the rear of the 77' 40. Removed the stock proportioning valve. Installed the 2lb residual valveright after the master cylinder and before the wilwood adjustable proportioning valve. With the prop valve adjusted all othe way out, the rear brakes still lock up before the fronts. I feel that I need to decrease the proportioning between the front and rear but am having trouble getting that worked out. Anyone have any thoughts on this.