I'm glad you guys find some interest in this, thanks for tagging along.
I figured out the thread size of the upper C's, its 1 1/8-12. I might try slotting a bolt and thread it up from the bottom to try and clean up them top threads. If that doesn't work, I guess I will have to try and find a used tap on fleebay.
The first of the 3 new toys showed up today.
I got my old tig ready for the trade in tomorrow.
I'm keeping my old cart that was homemade. I'm going to convert it to hold 2 tanks, the new mig, and the new plasma and new tig thats coming tomorrow.