is way the crankcase vents an oily mist into the intake. Had the RPM hang problem cause by this and it was solved with some carb cleaner. So I disconnected the vent tube from the airbox and extended it to the ground. I used 5 inches of aluminum 3/8 tubing attached to the factory hose to cross over to the right side of the bike and then used 3/8 Id hose to follow the frame to the ground. I glued a nickel onto the grommet where the hose brought the mist into the airbox.