This is a long story of my WR 450 F 2004 problem. The first problem was, my lights went off and no charging. Stator was the problem. I got it regenerated. Everything was fine but suddenly it died again and wouldnt start. I found the problem was a tweaked stator cable. Did that and it lived but another problem occured and is still there... The bike had problems starting. The rpms where very high and when I turned off the choke after heating up the bike it wouldn't idle, helping with throttle made it backfire like crazy and dies... Cleaned the carburator and the problem was still there. Played a little bit with pilot jet and the bike started to fire up on choke like it's supposed to, but turning it off it started to die on idle. It idles strange, it hesitates, little sputter and dies after few seconds. I played with fuel screw and nothing, just the choke is high as &%$#@!. I ordered JDkit, put it on and The bike fires on choke like new, throttle response is excellent, but still the idle problems when the choke is off... Tried everything, played with fuel screw, throttle screw... Nothing... It just won't idle... Is this a carburator problem, bad air, electrical problem?? Help please, maybe someone had the same problem. It's 8 months I haven't ridden my WR and I'm frustrated... Sorry for misspelings, I'm from Poland.