I'm having problem with doing the front brake on my 420sel. I replaced the the both the front discs. Had a hard time putting in new pads. I did one side. I used the old pad and a screw driver to push the piston back. The new pads went in pretty tight.

How much drag is acceptable on the disc? The disc does not spin freely. I have to muscle it to get it to turn. I think it is too tight. I don't have this tool http://www.samstagsales.com/images/kk126-00.jpg

John