Hey guys I own an a4 b6 1.8t quattro. I rebuilt one rear brake caliper with a fresh piston and seals. It went back together perfect, and was wound back and put back onto the car. When I pumped the brakes to bring the piston back out to meet the pads all of the brakes have like clamped onto the car. Tried to fix a sticky caliper and seemed to have made the probem worse. HELP 😂