I just aquired a Model of 1950 38/44, serial #S106xxx that is beginning to loosen up. There is a slight side to side movement in the cylinder at lockup. The cylinder notches are beginning to show signs of preening and someone seems to have taken to polishing around the hand area on the recoil shield. How do I tighten it up. The gun goes into battery Ok and seems OK in both SA and DA, although a bit sloe in SA. Need help before this goes too far south. Thanks guys.