Just got it and ride between 3000-8000'. I have about 60 miles on it now and have installed an FMF Q pipe, skid plate and radiator guards. It really runs good at the upper rpm level but stumbles mid range (saw the jetting thread and will experiment). I have not cut the grey wire or performed any jetting thus far. Would like suggestions for improvements. This is a really nice bike; I was riding an 87 XR600 and the weight/suspension and acceleration are a lot nicer on the WR.