PB, wish I could help but I’m just a home repairman who uses my ‘new’ Hobart 140 MIG to keep my bush hog in one piece, and eventually rebuild a second one for a backup. I was happy today when I gave it a real beating for fours hours and not one weld from this weekend cracked. Not bad for my first wire weld test this past weekend. My Miller stick welder is great, but the power source in the garage was mistakenly under-wired so it’s not really safe to use.

Steelin’, I’d be interested in your flux with gas info at some point, if you care to tell it.