Not sure how to get rid of hesitation down low(off idle throttle). Hear a lot about JD jetting kits, however not sure if they work. Last year dirt rider magazine rode the 2007 xc-f, said it has a bad lean hesitation and takes a while for it to warm up and run clean. They suggested taking out the stock leak jet a plugging it up. They did this and the bike ran great, accordingly to the article. Before i get into this with my bike, i would like to know if this i a valid solution or if need JD or Accelerator pump???