Bearracecars,
After reading through the PDF files, I've apparently mixed the two companies up. The agitators were in a PDF that I found on Hypertherm's site. Here's a link.
https://www.hypertherm.com/library/f...)/800270r1.pdf About 2/3 of the way through the document you'll find a section titled "Aeration Manifold For Cutting Aluminum With Plasma".
I wish I had thought of installing my input and exhaust air valves on opposite ends of the tank. Smart thinking.