Recap: you'll remember I bought a YZ426 to make into a dualsport/'tard for messing around town on. Had issues with the lighting kit, but got it sorted. Then issues with other stuff, got most of it sorted. Bike wouldn't pull cleanly midrange. Thought I might have timing issues, or grounding issues or something... Classic rundown: air, fuel, spark. I went back and rechecked fuel today... Freeing the carb to adjust fuel screws is nuts. Zip-ty will sell another tonight... the bike was running rich. Dropping the needle, raising the clip two notches and it runs better - there's only one more notch. For grins, I'll try the next leaner needle and get the next two leaner jets. I'm at 16-1800 feet, running stock EKR and 162 jet. I may race this bike (on a roadrace course, not motocross, with 17" wheels) at 4200 feet, hence the leaner jets. I think I have enough range with cooler weather on this needle to get it right for winter (I'm in Phoenix). The other thing is I've got a stock beat-up exhaust, and I probably will want to run an arrestor in there for the AZ and US land I want to go ride. That'll probably make me want to go slightly leaner, too. Fun fun... still haven't run errand one or even really left my neighborhood on this bike. Soon.