Hi guys, I'm tuning the pilot jet on my 08 WR450 and I'm currently down to a #42 and it still won't die when I turn the fuel screw all the way in. Is anyone running less than a #42 pilot, from what I've seen #45 to #48 is the norm ? I pulled the fuel screw out and an o-ring has perished on it but it's the one on the bottom near the knob end so I'm thinking that shouldn't affect it ? Float height has been set to spec from manual, any clues ? Thanks.