I have a 06CRF250X, and so does my friend. We both bought brand new on the same day Nov 07. I'm a gear head, adreline junky, partialy handicaped (vet), so the 250X is a dream come true. I broke it in a couple of rides, bought the JD jet kit, made the air box mods + difuser and am STOKED + totally happy. Here's the question: My friends bike is still TOTALLY stock, and his skills are more toward a novice or entry-level rider. He rode my bike and now HATES his stock bike due to that horrible "bog" on the stock bike just off idle. He does NOT want to make all the mods, just yet. Question: Need to loose the bog--nasty ugly bog when in gear, just above idle. Will the AP mod remove the bog, simply by itself? Question # 2:And while I'm in there doing carb surgery, should I bump up the main jet or move the clip? We ride mostly 2500-4500 feet. My stocker had a 130 main, clip in the #2 position. WIthout modding his air box or exhaust, is there a suggested jet better than the 130? Thanks!