It's not the lever that's the problem in this case. The lever is the easy bit. I think that welding would be out of the question as the parent metal wouldn't be suitable for a welded repair ( just a guess ) as it's probably made of what I know as Mazak, or something similar. This is why I'm thinking that a mechanical repair maybe more appropriate. It maybe that it's possible to machine a pair of new " legs " to replace the broken ones and bolt them on. It would depend on how much room there is either side of these " legs " when the whole thing is re assembled.