One other thing I forgot to mention.
My front calipers have double pistons.
I clamped the flexible brake hose, and then opened the bleeder valve. I have a Lisle 24400 disc brake pad spreader. I left the old inboard pad installed, and then used the tool to push the pistons back in. Even though I had the tool centered over the double pistons, both pistons would not go in evenly at the same time. I re-positioned the tool over the center of each piston only going in a little bit each time switching back and forth until they fully seated. Don't push one piston in all the way because the other piston might pop out.