Hi guy's i'm new here and have a question. I'm taking a test tomorrow, 3G and 2G using 1/16th Dual shield, CO2 backing gas. The joint is square grooved, 1'' and the root with backing is 5/8th. And FYI, the square edge is above, so no bead support on the bevel(in 2G). Here's the question. The welds started beautifully. I ran two beads for the root, let it cool and then proceeded to weld two more. Still looking good. I'm trying to give it as much time between passes as i can, but my instructors weren't going to stick around till 11 for me to give it the time it needed. Basically, the last bottom pass sagged so bad it obviously messed everything else up, my cover passes were atrocious. I started the weld on the bottom edge so as to give the top bead more support. Should i have started on the top edge instead? Or did the bead sag because there was simply too much heat in the joint itself? Oh i was using 32V with a wire speed of about 300.