I need that specific model because it was the last model before all the auto set electronics were added. I still use my 135 every day since I bought it new and it has never failed me. I have a very specific need. I also have a millermatic 140 (precursor to the 141) and a new 252. I’m buying this old used one to make another welding station. I plan to drive it hard too, damned the consequences of finding replacement parts.