Hi, I was doing the brakes today on my car and I did the front brakes really easy, but now I have a little problem with the rear calipers. How do I push the piston back? I tried forcing it back but all I did was nothing. If my mind doesn't fail me once I read in the old SHO that you had to use a special tool to push it back. If so, what is it and where do I get it? Or is there a way to push them back without the tool?? Any help will be greatly appreciated.