Tried out my new PowerMaster226, couple questions

[singlesupra]

I have read the manual(the one listed here) but perhaps I missed what I am looking for.

Base/Pulse current
"Turn the pulse off by turning the pulse current control to lowest setting". When I do this, so that I can controll the Base current, turning the base current knob will not adjust the digital display. If I do the opposite(turn off Base current) and turn the pulse the amperage varies as it should?

Pulse Width
Unless I have this set to the highest setting, the digital display will not stabilize. It varies from -003 to 245? Turn the Pulse width knob to 100% and the display appears as normal(although as I mentioned a little earlier about the base/pulse issue)

Current overall/foot control
I can set the current to read, lets say 90amps. Turn the pot on the foot control to 100% and it is WAY too much heat. Turn the knob to around 95% and now it doesnt have enough heat to melt the aluminum. This isnt a huge issue for me in aluminum, I can learn to use it this way but and just wondering if its something I am doing wrong or what? Now I am not sure I will be able to learn to work around this in stainless tubing though

Current
Also, I cant seem to get the digital display to go under 45amps. In aluminum this will not be an issue, but I work with a lot of .060" or so stainless and would like to be able to set it low enough to where when the foot pedal is pushed in all the way, it still doesnt have enough heat to burn through and I keep bumping up the amperage until it gives me the amps I need. Kinda an odd way to do this Im sure, but its what has allways worked best for me and would like to keep doing it this way.


Now, onto the positives. All of my previous Tig work has been done with a Lincoln 175 setup. While it worked good, the lack of options is what pushed me into buying an inverter setup. The welds I did do in aluminum last night bested any aluminum welds I had made to date yet with the lincoln. To me that says quite a bit. I also have the welder at my buddies shop, he owns a large welding/steel erection company and I figured he could help me get setup much quicker than I could myself since he welds daily. He was impressed with the weld quality as well. However, he could not figure out the issues I have above either.
Overall, I think this machine will do what I want to do with ease once the few issues are sorted