I have a fairly new Davidson's Pietta 45. Range once, lots of dry fire then...the hammer will not fall all the way!  I notice the pin that holds the firing pin in has worked its way loose and is hitting the side of the frame. Actually left a devit in the frame. I push it back in with some blues locktite. Came loose again.  I am considering placing a small bend in it but it is really short so that might be difficult. How is this supposed to be fixed? It has been dry fired a lot but only abou