The way the hoses are setup from the factory into the airbox isn't recirculated back to the oil system. Any oil that would be pushed thru the way the factory setup is would be sucked thru the intake, burned, and exhausted (lost oil anyway), or just puddle up in the airbox.
Have you been draining alot of oil out of your breather reroute hose? If not, does your motor have alot of miles? May be time for new rings if you haven't noticed leaks anywhere else. Hope this helps and good luck!