If you decide that its to much trouble to fix , I will take it off your hands as is f, or the cost of post to me here in WA and as it happens we do have a nice AC , HF , TIG machine here at work and I am the competent welder
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HF = high frequency , its the only way to weld aluminum.
PM me if this is the route you take , I might as well try ? , I will post the results , with photos if anyone is interested .
Brian.