Hi guys,I am new to welding and have bought a Sealey super mig 150, I am trying to understand amp and wire feed settings,the welder has hi & low 1&2 , so four settings is it safe to assume as a starting point, low 1 = 1mm ish material and low 2 = 2mm Hi 1 = 3 mm and hi 2= 4 mm. thanks for looking and any guidance would be appreciated , thanks Richy