setting up your back purge rig and your torch, and welding joints. It's a different animal than mild steel.
You're obviously talking "tig" but the OP's reference to .030 wire would indicate he's using "mig".
As for using mig, you're using the wrong gas. Straight argon is for tig ... ONLY ... PERIOD. For mig you want a co2/argon mix. And for what you're doing I would suggest not trying to run a bead but rather a series of spaced tacks. You seem to have too much heat in your parts as well, cool off the tacks with compressed air.
