I'd buy a new upper. Failing that option I'd braze it with these. I have them in the garage and they work quite well.
10 Fluxless Aluminum Repair Rods & Bonus S/S Brush | Trade Me
Type: Posts; User: gadgetman
I'd buy a new upper. Failing that option I'd braze it with these. I have them in the garage and they work quite well.
10 Fluxless Aluminum Repair Rods & Bonus S/S Brush | Trade Me