I wouldnt consider any of the above mentioned options as an amateur repair with the exception of installing a piece of shim stock to fit the hook. Tig welding isnt something you just take up over a weekend. You might be surprised at how inexpensively you could have this done by a pro gunsmith. I think the last one I had done was around $150-200. From your description of the gun it sounds like this is the only real mechanical issue. I say invest the money and shoot the gun, rather than risk irreparable damage or hanging it on the wall.
PM me if you want the name of the guy that did my last one
Bryndon
