I read a thread about this, but could not find it. The strap pin keeps falling out of the tail piece of my Collings MF. I want to fix this before I have to write a thread about a "Smashed MF". When this first happened, I could spend a little extra time and twist it in really tight and would not have any problems for a while. Now it is popping out almost daily and I notice that it never really sits in well now. Thanks in advance.