Just got my 200dx and I started running beads . after about 10 min I would loose arc during weld. I would back off pedal. And nothing. Then it would run a few beads fine. First 45 min of use it happened about 4 times. I have read about people have ing to adjust. There points because of high frequency issue but can u loose an arc after weld bead has started?? Or do I have somting else going on ?? Thanks for your help