Any tips on getting this %#@! caliper compressed on the 1990 80 with Girling calipers? Does the piston screw in? Or do you just press it in with a c-clamp (which doesn't seem to work like the ATEs did on my WMB)? I'm working on the rear right now because the pads are 55k mile old. -- The fronts have been replaced at some time and seem to be o.k. Chris '97 A4t '90 80