Alright, I can't take it anymore I've been trying to jet my 05 WR450 for months now, and it's killin me smalls. Here's what I have going; I ride @ 4000-6000 ft 40-60 deg, 168 main, 45 pilot, zip-ty 1.5-2.5, ais removed, air box opened, YZ pipe, & JD kit blue #3. I have 1/4 to 1/2 throttle stumble, and a idle that has a mind of it's own when the engine is good and warmed up. No popping on decel I've read where 1/4 throttle stumble means too rich I have a black plug, black tail pipe, I'm burning up fuel, only 30 miles to switching to reserve. I've read where a fast idle when warm means I'm running lean. I'm at a loss at what to do. I've followed Indy's and JD's recommendations and I just can't figure it out. Can anyone please help.