New guy here. I have been working on a rear brake dragging problem on a 2008 FatBoy with 20k on it. The disk is getting very hot even on a very short low speed ride, one mile, without using the rear brake. I recently replaced the rear tire, don't know if that's related??? I was very careful about the rear alignment adjustments. So far I have, Removed the calipers and cleaned the pistons and lubed the outside with dry lube. They didn't look that bad. Cleaned and lubed the two slide mounting bolts. Flushed the system with new fluid using a vacuum pump. Checked and lubed the brake peddle at the master cylinder. The peddle is not putting any pressure on the cylinder when at rest. I took the caliper off and pressed on the brake peddle to extend the pistons against the brake pads and was able to retract the pistons by pressing on the pads by hand. After all that this evening and taking the short ride I mentioned the disk was too hot to hold on to. After the ride I was able to wiggle the caliper by hand and the pistons retracted enough so they weren't touching the rotor. Is the caliper too loose? Do I need new mounting hardware? Not sure what to do next???? I have not checked the run out on the disk yet. Thanks in advance.