Good info! Thanks for the advice everybody!
The welding shop guy actually had me switch over to green since i'm just doing aluminum so me must be old school!

Seems to be working pretty well except for the fact that he also talked me into switching to 1/16 for the thin wall intercooler tubing but I think it's too small since I'm going through tungsten like crazy- the whole exposed tip is glowing while i'm welding and it gets brittle and has even broken off a few times so I think I'm going to go back up a size....
I think i'm just going to order a wheel for my grinder today.. Seems to be the simplest solution... i'll just get out the label maker to remind myself not to use that side