It is a little easer to get CGA fitting when the tanks are made in the USA but try and fit USA to Canadian tanks like a CGA 520 to CGA 410. It is easer to fit the newer tanks to the newer regulators then the old stuff I have 7 different acetylene regulators.
Everlast PowerTig 325EXT (Canada)
Everlast Power I Mig 250 (Canada)
Everlast PowerPlasma 80S (Canada)
Everlast PowerCool W300 (Canada)
Everlast PowerMTS 250S Fitted with a 30A Spoolgun(Canada)
Miller Dynasty 400 wireless(Canada)
Millermatic 252 plus 30A Spoolgun(Canada)