Yeah - I thought about that. It might be ok - It's hard to weld castings, there's usually alot of impurities making brittle welds. I've located a casting place near me so I might get a new one cast out of Al or Mag. - just need to cost it out.
I noticed a salvage yard in California has been selling Paso items on Ebay. You might check that site and see you can contact them about one. Good Luck!