[Talonmotorsport]

Yes you can MIG stainless with your current gas how ever it's not as soft as mild steel so it needs a lot of heat. I would suggest turning the amps up and the wire feed down and instead of trying to do long runs take it slow, I would tack space tack space grind flush then fill the spaces that way you know you've sealed the join. It would also help if you match the grade of stainless to the filler wire but I think you have enough to worry about already.