I agree too much argon ... I made the same mistake when I go my 200dx ... the meter is different to what I had been using. Also for steel use DCEN and remember the three C's and the three P's ... clean, clean, clean and practice, practice, practice. When you start doing aluminum set to AC and remember that the balance control is backwards to Miller and Lincoln with them you would set frequency around 100Hz w/ a balance around 70% ... with an Everlast set frequency @100Hz but the balance around 30% otherwise you WILL fry your tungsten and melt your cup.