New 2018 with aprx 15hours. From time of new the rear brake has too much drag, squeals and gets super hot. I have taken the caliper apart, greased floating pins, bled system with fresh fluids etc. With the bike on stand, the wheel barely spins one revolution with considerable force. If I push the caliper over by hand releasing pad pressure the wheels spins 2-3x like it should. It seems like alignment or caliper needs shims or something ?? Any thoughts or anybody have this problem?