Hello everyone, new here and have owned a 200 DV for a few months now. Just getting some time to really practice and some of my welds are rather pitted on super clean steel, and I'm getting the occasional rust around the welds, so thinking it's a gas flow issue. During my troubleshooting, I cannot find any information in the manual or online about where to properly read the ball on the flow meter that comes with these welders. Top or middle, bottom? Different makers have different specs, but couldn't find anything written on it.