I'll have to wait until I can afford to get one, look at it, then re-read your post... (I print a lot of this NG out) I got lost on the cartridge conversion and quit reading somewhere around taking the Y off and the 4" and 6" inch thing... like trying to understand someone talking about a car when you've never seen one..
I was noticing tonight that almost an hour after sanding a couple of boards with the palm sander, I could see dust in the air when my wife came in the driveway with the lights on... HAS to be bad for me, breathing in that crap every evening..