I need to replace both rear calipers on my 91, I have a good pair but I'm having issues turning the pistons back into the housing for the new pads. I do have the proper tool set. Ive done it on my Mini coopers and my 93L while the calipers were on the car. These are on my bench so do the E-Brake pulleys need to be in a certain position to be able to turn the pistons ? If I manually actuate the E-brake brackets the pistons do move out a bit so I dont think they are frozen.