Oh, I forgot to mention, just for GW;
We pulled the shaker off, leaving just the air cleaner in place, to see what the shaker costs me. Only 2 HP, and basically nothing during the rest of the run. I really was shocked by that result, as I figured the shaker would be a big limitation. I was wrong. So, thanx Weld for the suggestion on the foam top air cleaner. It seems to be working pretty well.