Welcome.....Did you clean the carb with carb cleaner while you had it apart? How does the K&N filter look, when was it cleaned last? Did you turn your air mixture screw a little each way to see if it made a difference? This is what I would do if getting this quad for myself....1. Take the K&N and scrub it in a bucket of hot water with dawn dish soap, rinse with hot water, shake and let dry for the day, then spray with K&N oil. Get a outerwear for it. 2. Tear down carb, every screw and jet and clean. 3. put a 42 pilot and 185 main if your running open air box for starters. set the air mixture screw at 2 turns out and start from there. Once you get it dialed in and later it starts to act up and bog then you know its past time to clean your filter again.
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