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I was surprised to find that no one had suggestions on this but it's okay I figured it out myself. I repaired the damaged piece by finding a 3/8" drive long socket that just fit inside the tube then I used a pipe behind the socket to hammer the socket through the tube which removed the dent. Then I left the socket in the bend radius and used a vice to get the rest of the radius out of the bend. Everything should fit together okay now. By the way when hammering I set the end of the tube on a piece of heavy rubber to avoid peening the end of the tube. When I used the vice again I wrapped the tube in rubber to avoid damaging the surface of the tube.