For the most part I am happy with my machine, but I am having a couple of issues. For one, the foot pedal control does not work as it is supposed to. The only way to get any kind of control is to use the machine it the 4T mode, and set the amperage on the panel. When I try to use 2T and the foot control, it acts very much like an abrupt on-off switch, and adjusting the dial on the foot control to change amperage seems to have little to no effect. I am not sure if the problem is in the foot control or the machine, as far as amperage adjustment goes, but it does not work like it is supposed to. Overall the foot pedal is a POS, since the rack gear slides off the pinion gear on the rheostat constantly. I am going to have to modify it to work correctly, which kind of sucks, since it is brand new.
My regulator is also leaking on the high pressure side, which I noticed after quickly going through a bottle of argon.
Aside from these two things I am happy with the machine, I just wish the thing worked like it is supposed to.