Working a 2003 Softail: I know it is important to clean the brake caliber pistons when changing pads. I would think that it would also help if you cleaned as much of the area of the piston as possible. So my thinking is that, if you had a spacer, that you could slide between the pistons, with pads removed, this would ease cleaning. The spacer would be the thickness of the pad plates, the pad plates being the metal part of the pads and the rotor thickness added together. This procedure would be done with the caliber removed. Guess you could also do this with the caliber installed and some type of shims, the thickness of the pad plates in place of the whole complete pad. My question is, do you think this would be an allowable limit to prevent the pistons from removing themselves from the calibers when you pumped up the brake?