[chrismorse]

Hi showdown,

If i am understanding PMO's intended layout, the big hose goes from the crankcase breather outlet on the top/back of the engine to the tank, then a big hose, (that used to go to the cis airbox, now goes to a plastic "T", then two smaller clear plastic lines go to the rain hats. the K&N filters are oil wetted to capture the dirt/dust before it enters the ITBs.
My sense is that the oil vapor that is being carried from the crankcase to the sump tank has a chance to slow down and likely leave most of the oil in the tank. the big hose then splits into two smaller ones and the remainder gets deposited on the air filter/through, to be burned.

the orriginal CIS air cleaner had a very small drain line that dumped excess out into the atmosphere, in front of the engine mounted cooler. maybe, on high mileage engines, (loose rings), the quantity might be noticeable. I haven't a lot of experience with this, hopefully, those with more blowby will opine.

:-)
chris