Thought I would ask here before I start calling T/C: Don't know what it's called, but the 2 piece "lever" that is under spring tension at the back of the barrel--it's compressed when the barrel is closed--was laying loose with a barrel that I picked up yesterday. I can get it into place and the barrel locks up OK, but this piece isn't being held in place upon opening the action, as my other barrels do. Is there something simple to look at to fix this, or is it headed back to TC?