On my 72 Swinger, the passenger side wheel has some pretty good resistance to rolling when I have the front end off the ground on jack stands. The drivers side wheel rolls with little effort. I can see that the disc pads are worn more on the passenger side also so I know the caliper is not totally releasing. I have installed 2 new calipers and 2 new brake hoses. When I bleed the brakes, the fluid comes out normally and I am unsure why I am getting excessive drag. Could it be in the proportioning valve or what? Any experience with this problem?