There's an unneeded clutch cover vent that gets blocked off on the Banshee. Why Yamaha thought they needed 2 vents, is a mystery. The RZ350 had an autolube pump there, and there weren't 2 vents on it. It's like they said, "What should we do with this hole where the autolube pump was? I know, let's put a 2nd vent there".