My regulator also leaked. I had to swap to different pipe thread and use a liquid thread sealer to remedy that.
I used the plasma a ton, and it worked great.
I used the tig 2x, then had the HF problems. I thought it was my settings. Turned it off. Went inside to write down settings for the machine from welding tips and tricks. Came outside to use them but couldn't. The machine had froze up. It had no amp control and the guage was locked at a number higher the machine is rated at.
Mike called me after I called the tech line, diagnosed it, and said it would have to be swapped out. Come to find out now its being fixed and way behind schedule.
You guys need a location on the East Coast! This shipping the machine for warranty work is for the birds, especially after only using the machine a couple of times.

Lets see what customer service does to make it right.