Hey guys. I’m over here racking my brain trying to figure this out. A few days ago my Atv started sputtering and would only run with the choke out. So I cleaned out the carb and decided to order a rebuild kit. Well the Atv idles perfect, but if I give it much throttle at all it boggs down, spits, sputters, and will backfire and die. I even put all the original carb jets and hardware back in and still the same problem. I’ve tried adjusting the idle screw and pilot/mixture screw and neither helps. Hope someone can help me as I need my Atv. Thanks in advance.