I was issued this knife in the 1960's. They are simple tools that work. The metal that holds the main blade has broken, allowing the blade to rotate 270 not 180 degrees. I called the company, who has the name, but claims no information nor parts from the former owners. I asked for a idea of the dimensions so I could grind down the rivets, remove the blade and build/replicate the part. They kept saying they had nothing to do with the company that supplied thousands to the military. Any one have any ideas or can repair this relic? This knife opened lots of C Rats in SE Asia and was in my footlocker for almost 30 years. I could buy a new one, but this one is special. Suggestions?