I took apart my carb this past weekend on my 2006 tw200 and found that my low speed jet was partially plugged. I cleaned it and i was amazed how much more power and response I have. I did the same to my sons 2010 Honda crf80 and his was plugged and it brought his bike back to life. I notice that both low speed jets had like a web or screen halfway down the jet before it sprays through the tube of the jet. Has anyone drill out this screen or web to prevent future plugging?