I am new to welding and have a BOC Magmate 180C. I bought it as they said it would do thin stuff. It welds thicker stuff really well - no problem. But I think I need some advice on how to handle the thinner stuff as I just make a hell of a mess. Sometimes, I can do several inches of perfect welding, then, it blows through. Maybe it's because I slow down - my instinct is to turn it down but then, at the lowest settings, the wire burns back before it reaches the metal. Any ideas?