Weird, there isn't even a link to click for me. Guess I'm not cool enough
The machine is on AC. Hold off distance is short. Basically as close as I can without fouling the tungsten...which has happened more than I care to admit though. I have seen a lot of stuff that said the arc length was a factor in heat input. Shorter at length at a given amperage will result in less distortion than a longer arc length at that same amperage so I generally have the piece up on something so I can rest my hand on the table and just drag my hand o try and keep it consistent.
Thanks for weighing in. I followed your TIG journey here and you definately got it down now!
Edit* posted this before seeing that Vince reposted. I see the link.