Hey Guys here are some of my thoughts or repairing his arm connection.Being carefull not to go crazy by ruining his working innerds......I was thinking if I drill into the sholder connection.....and get a screw that the arm will pop onto.....I think that if I get the proper size machine tap.......to match the screw threads......this just might work.....I'm thinking of a fine threaded screw.....Any thoughts or ideas?? Thanks walter