I have Century CETME with what I think is an extremely uncommon problem. When I was operating the charging handle to unlock the rollers, the cocking tube came loose from the receiver. I dissasmbled the rifle to see if I somehow broke a weld, and it appears to have never been welded. There is a hole in the part of the tube that inserts into the reciever, but the inside of the reciever is completley smooth at that spot. It looks like the only thing attaching the cocking tube to the reciever was the bake-on paint. I have put about 100 rounds through the rifle since I had it, and I was told I was the first "owner" (got it from a dealer who got it from century). This is one of the first CETME's century built with a stainless steel cast reciever. It has a bolt gap of .017" and HAD a cocking tube gap of .070."
My question is, how does one repair a problem like this? Can I high-temp solder it back in place? Do I have to remove the barrell and then repress it?