Mike after I got them out I think you could simply drill a hole into the flat side in the center maybe 3/8 dia. and take a 5/116 bolt and push it out. I started to try it on the second piston but I already had the cutting blade in the grinder and it only took a couple of minutes so I just went ahead that way. The only thing might be the chrome on the piston would be hard to drill but you could grind through the chrome in a spot and then drill and be fine. One other thing I did was I set the piston height in the caliper after I had the piston in but before I installed the adjuster screw. That way I could just push the piston around and then go back to the bench and screw the one part in till it bottomed and put the little pin in it. I also poured the fluid into the piston before I installed the screw piece, thanks for that little bit of advise.