I just got my EMPI Breather Box. I am going to vent my valve covers to this box and then back into the carbs. However, I am puzzled by the diagram below. It shows the screen and filter above the hose entry and exit points. It would seem to me that one or the other should be on the opposite side of screen and filter. What would stop the oil residue from flow out to carbs? Am I missing something here?