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We use some of the ESAB Dual Sheild Arc 71 E71T-1 1/16" dia. 100% CO2 wire on a few machines here, but we use it in 1G and 2G and it passes UT without any problems, and the visuals are good, slag is easy to chip(practically falls off on it's own). ESAB's website has the optimum parameters to run it out of position, might give these a try.
1/16" vertical/up: DCEP 25V, 220A
1/16" overhead: DCEP 28V, 240A
3/8" - 3/4" ESO
gas flow rate 30 - 40cfh w/ a dew point of less than -40F
John Wright