One of the best things you can do John is to get a good quality auto helmet so that you can see the weld pool as you are welding keeping the spark within the weld pool going in a "U" shape along the joint - effectively pushing the pool along with the spark. Keep the gaps between cuts as tight as possible until you get the hang of the way the weld pool behaves.
Turn up the power to as much as you can get away with and the gas flow at about 10 l/min. Also make sure your wire feed is as smooth as possible as this will make for a better more controllable weld.
Practice.....AndyH.....
