This is the second "new" caliper that I've installed because I thought that the firts one that I bought was factory damaged. I will try to do what you recommend (bleeder valve opened after a cruze around the block and seazed caliper) However I think I've done this yesterday and the result was - as soon as I opened the bleeder valve (with the tube on it) about .25" (in the tube) of the brake fluid came out and that's it I beleive that the caliper was still locked. What does this mean? FYI it is vary hard to push the caliper back in when the brake line is connected I don't know what is this due to, caliper cylinder being misaligned (the diagonal ware pattern on the old pads is still troubleing me) or fluid preventing it from retraction.