Hello everyone. So I attempted to do my brakes today. Let's just say I spent 3 hours on the rear only. The problem was not only were the caliper pistons a pit of rust but the driver side rear caliper piston didn't and couldn't go in all the way even with severe pressure. Aren't they supposed to be flush with the caliper body? Well, had to take the shims off to barely get the caliper over the pads. Wheel still turns free and seemed to bed in fine. Stops without noise but why would the caliper fit fine on the passenger side and not the driver? Also, noticed after pushing the pistons back in the bleeder screws and caps had fluid in them. Still have good pedal and nothing wet or dripping back there. What would cause the fitment issue?