I have a Seneca with a lock that bends outward from the approximate center. I have to keep it tight or the half-cock engagement won't reliably catch the hammer. Tightening the lock screw straightens it out and voila... no more problem! Sad that there won't be any more T/C side-locks in the foreseeable future, but as I am just about ready to knock on Heaven's gate it won't matter much to me. In Heaven I'm sure I can still get parts. 
