I just got my 2013 250EX . I had a Miller syncrowave 250 which I loved but in my work weld a lot of thin stainless and have been having trouble with excess heat/distortion so bought the 250EX mainly for the pulser. I didn't much like the supplied handpiece and wanted to use my ESAB HW-20 handpiece as I have lots of gas lens, etc. from .040" to .125". I didn't want to shell out three hundred bucks like this guy :
http://www.everlastgenerators.com/fo...tos-and-Part-s
So I made my own adapter to use what I had. I robbed the switch out of the supplied handpiece and zip tied it to the HW-20. I have a Barnard water cooler so used it as well. The 250 EX seems to work great (after I set the point gap from about .075" to .032").