in a previous post there was alot of good info on building a remote for a engine drive welder . my question is how critical is the ohm spec on the rheostat. the one in my hobart g-213 is a 8.25 ohm 150 watt i can find 7 and 10 ohm in 150 watt. would this work. i wil probably have some questions later on wiring the remote switch right now just getting parts around.