I rotated my tires yesterday and found a problem. The front left rotor would not turn. Thought it was wheel bearings for a second, then realized the brake pads were still touching the rotor. Well, I could turn it when I had the tire on, but it was tight enough I could not with the tire off. I took the brakes and caliper off. (Had to use my hi-lift as a big 'C' clamp to compress the wheel cylinder). I cleaned everything with brake parts cleaner and put it back together. Pushed on the brakes and the cylinder still wouldn't release. Does this mean I need to overhaul the brake cylinder or would it just be easier to get a new caliper assembly. Any way to loosen up the wheel cylinder? If I replace the left one do I have to replace the right one to get equal braking? Thanks Cruisin in my '73.