I ended up buying this unit.

Its very clean and tidy.
Came with a ton of filler rods.
Brass/copper (I think), stainless, and mild steel.

So now a happy owner of a 150amp Cigweld TransTig.

Went a bought a 2.4mm tip and have been praticing with the mild steel in DC mode to try and get my hand/eye in for it.
Will be getting some better gloves as my normal gauntlents are just too clumsy for the filler rods and the handpiece.

Have played around with the settings knobs.

Anyone help me out with what they all do exactly?

Post flow and pre flow- I know thats the timers for the gas flow before and after the arc.

The amps setting makes sense. Its a pity its not measureed in amps. Its a scale of 1-10.

Its the other one that im not sure how to set properly. (on the far right in the pic)
Arc Force? set on a scale of 1-10. What does this adjust? and how does that relate to amps?

And what is with the black sections on the knob scales? are these 'ideal' setting ranges? If so, ideal for what?

Pic of the exact same unit as my new one.
http://www.nzwrs.com/t_tig150



I havent been able to get anything online yet. Plenty of general information, but nothing for this model.
The thermadyne website has nothing, and general web searches dont bring up any specific for this model.

I think ill try contact Thermadyne direct and request an owners manual if they have them.