Is it a turntable heel like that of the P18. Most P12's had interchangeble brakes. Only the true racing heel does not. The best advice I can give about bending the brake is to make sure the the binding is mounted first before you try to bend it. The easiest tool to use is a vice grip and an old ski pole or a metal pipe to bend the brake. Put the vice grip just short of the spot that you want to make the bend because the bend will add like 5mm's to the brake width. You need to make sure the brake is bent out straight first.