LongArc,
Here is what the Lincoln Rep gave me when I started using UltraCore it is some good basic info. And just like stick welding don't start or stop in the same place twice. I wouldn't be any help on the voltage setting because of the length of my leads creates a voltage drop. Once you find the sweet spot over head welding is cake. But I would suggest wearing a sleeve, a bib, and a back hand pad, I always do.