My 2011 MCS seems to have a rear brake drag issue, like the rear brakes don't completely release. Verified tonight when I did a tire rotation, very hard to spin the rear rotors with the wheels off, just grabbing and trying to spin the disc by the wheel studs. I took the calipers off, and compressed the pistons with the proper tool with no issues. Caliper slides were free and moved smoothly. Parking brake seems to work fine, seems to release at the handle like it always did. Anyone else have a similar issue, and find what the problem was? Thanks in advance!