AMI, gullco, polysoude, Fronius and a couple of others migatronic, had a couple of demos on Lincoln gear......
Liburdi Dimetrics , AMI, Magnatech, Astro-Arc.
The only track welder work was with a programmable Bug-o-System.
Most of my experience was in from 1992-2002 with a couple of machine jobs after those dates so a little rusty…
Anything specific on your mind?