I have read probably hundreds of posts on this subject between this forum and others, but I have a couple of questions about trouble shooting this problem. I cannot get my arc started in ac or dc (hf on "start" and "continuos without touching the workpiece with my tungsten. I have cleaned all connections on my leads, regapped (and cleaned) points to .010", disconnected stick lead, and uncoiled my torch lead trying to fix the problem. Once the arc starts the machine runs ok...not the most stable consistent "buzz" as compared to other machines, but the hf is working nonetheless. I have tried the entire range of amperage and frequency intensity with no change in arc performance. Does anyone have any other suggestions? I obtained a manual from ESAB, but the manual they sent isn't for my exact machine...the controls, and internal layout are a little different, but I'm sure most of the specs are the same. Probably just a slightly newer model. Any suggestions would certainly be appreciated.