Hello all from Wasilla Alaska. I just received my first tig welder, a 250ex. im familiar with welding (work) just not tig.. I was wondering if someone could give me some starting setting on the machine that work for the foot pedal? for aluminum..... freq-100, bal-65, 3 sec pre, 5 sec post, hf start, what setting for pulse pre and post amps? and how much cfh for gas? I also don't have a gas lense as locally there wasn't any. im using 3/32 2% lanthanated. 1/16 5356 filler, that's all they had....