Just fitted the new rear discs and pads to my car, wound back the piston as instructed and now find I have no handbrake at all on one side, The handbrake lever moves when operated by hand but feels like it is not actually doing anything. Had a similar problem a few years back and (a local rahter than specialist) garage insisted on fitting a new caliper, infact this is that caliper which has done very little miles since. Am I doing something wrong when winding back to cause this or what? Given up on it for today!