He would have to modify the machine to open up the blower, which could in turn cause heat loss, but I'm betting he's not getting near the heat with the rotary as with the wand.
I agree with the 4 to the door or 2.5 inch hose run if your machine allows it. I tried a
rx20 years ago with my legend way to wet maybe not enough dry passes.
My problem was everyone talked up how much faster it was to use a
rx20 faster no wetter yes maybe not so bad if you slow down and take your time like Jim said but to me that negates the reason for having it
I love my
rx20 with mytee
glides now but only on occasion.
http://youtu.be/JJMmw2yZWbI