Hi Bifster70!
Have you looked to see if Tregasskiss, Bernard or Binzel may have what you need? A good place to find out would be their websites...
Have you looked for that info @ the ESAB North America website?
You should be able to find out what kind of "back end" your migmaster has or maybe the manual that came with your power source will have all of the info you're seeking... I would start with the manual if available.
If not, check out the websites... Happy hunting and good luck!
Respectfully,
SSBN727 Run Silent... Run Deep!!!