Following 02FXST HD Manual, I removed brake pads prior to removing wheel to fix a flat. Fixed flat/installed new floating break rotor. Prior to reinstalling rear wheel, I installed new inside brake pad and did tighten the pad pins just a bit. Installed wheel and now,new outside break pad will not fit. Seems the floating button on new rotor is blocking install. When I attempt to remove new inside break pad, the pins will not pull out although pins are completely loosened. Both sides of brake have pistons are fully retracted into their bores. I have not pumped or engaged the brake pedal.Thinking of reusing old brake pads (still have some life) to break in new rotor but first have to remove new inside pad. Thinking if I pump brake pedal that might unstick the pad pins, but I'm afraid of outside pistons coming out of their bore. How do I unstick the brake pad pins? Why are new brake pads not able to fit with new floating rotor?