OK... made some huge progress in the last two weeks since I checked in... Got my red tungsten, got my fine wheel on the grinder and what a world of difference!! Much more stable arc and much better puddle control- less contamination issues since I can pull back a little further from the puddle.
This weekend I built an air intake system out of the previously mentioned Vibrant polished tubing and it turned out nice. I didn't scrub down the tubing this time as suggested and had no contamination issues with the polish... (I did verify that TIG doesn't like Sharpie marks though!!

) I had an AH-HAH! moment and most of it was done without filler rod. It was so beautiful!! On these cars I grind the welds flush and the tubing gets painted so I need to be careful not to sink the weld too much- its better for me to have a little material to take off.
Next TIG welding question is what do you use to clean a surface that you know is contaminated? For example trying to fix a pinhole leak in an aluminum radiator that you found after it had been filled?
Thanks for all the advice! It's been a huge help!