My tendon guard was broken right in half. I removed all the stitching on the tendon guard, and separated the glue. I exposed the material on the back of the tendon guard all the way down past the copper on the back of the skate. I then used the blademaster copper removal tool CAREFULLY to remove the copper rivet. Then I replaced the tendon guard, installed a new copper rivet and used contact cement to glue the backing back onto the new tendon guard. I let it sit for 24 hours to cure. Then I stitched around the top of the tendon guard to finish it off. Very simple repair if you have the tools, patience and skills. The "hardest" part was drilling the hole in the new tendon guard to perfectly match the old one and butt up properly to the skate body. The new tendon guard was slightly different sized, so I had to do this a bit custom to make it flawless. If it was only the copper rivet that was broken, I would have used an exacto knife to cut a "+" shaped cut over the copper area. I would have replaced the copper and then used contact cement to re-seal the vibram.