I understand the difference, Bulldog. I modified my home made Scat cabinet per their instructions. I built mine 20 years ago from their plans. My cabinet has a funnel type trap at the bottom of it. I tried putting my pick up tube at the bottom of the funnel. No good, as the moisture went to the bottom of the collected abrasive it was standing. That's were the moisture collected, too. Depending on how much media you use(I use 50 lbs of 80 grit aluminum oxide), I hard mounted my pick up tube about 3 inches from the bottom of the funnel. I use an old A/C filter with a valve to control how the media is sucked up. I also use a cheap HF filter to supply the air to the cabinet. It might sound strange, but I light my cabinet with an old 150 watt incandescent bulb, which helps dry out the media while blasting. I filter the air with my Craftsman vacuum through another port. It might sound cheesy, but it's served me well over the years. I'll send pictures, if you'd like. Paul.