So I've had the 200DX for about 3 years. I used it probably 25 times just to weld aluminum. Let me say it did a very nice job. Yesterday I went to use it and the tank was low I tried to do some aluminum welding and it would only go up to 25 amps. I then went and got the tank filled and the same thing happened. After talking with ( I believe Ray ) at Tech support he thinks just the High Freak is working and I had to send it back for repairs. It was 230 for shipping and I'm being told 4 to 6 week turn around. I'm glad its still under warranty but I hope this doesn't turn into a reoccurring thing. I will post more as this unfolds.