I'm not sure what its called but on the left side of the engine, that metal hose that connects to the motor by the shifter, it leaks oil every time i start my engine. I took it off to see if there is an o-ring thats supposed to be back there, but all i saw was a neon green ring? I thought they where supposed to be black like the other side. Any info would be great iam tired of putting money into this bike. http://oem.thumpertalk.com/2004YZ450Foilpump.aspx I think its numbers 25 and 26.