So I replaced me rear pads and when I tighten down the caliper to Frame the pads lock on the rotor. I used a c-clamp to push piston all the way in when replacing pads. If I loosen up caliper from Frame the pads will come off the rotor allowing free spin but still can hear rubbing from pads. Until I loosen more which looks unsafe like bolt can rattle out very quick. Any advice??