Yep one more question about dc. I just picked up a second dc system for the shop. It is a PM 1900 3hp system. I plan on hanging the blower housing in the closet where the woodmaster(wm) one is and move the (wm) to hang above the molder. This will be just for that machine. Now the thing is that the wm has a 6" inlet and 6" outlet and the PM1900 has a 8"in/out. I would like to know if I could use just one exhuast line going to the bin out back or if I need to stick with two lines? Most of the time it will only be one on at a time.