The rib was loose on this Fox J grade SBT so naturally, some "gunsmith" decided to tighten it (with a hammer, of course). Apparently the hands weren't too steady. I disassembled the rib from the barrel, machined a new anchor post and pin and proceeded to undo the punch damage. I then reassembled the rib, properly swaged the anchor post and then filed it flush to the rib. Finally, I re-matted the rib and prepared the barrel for bluing. This was just one of many issues that this gun had.