2005 sportsman 700 carb help

Hey new to the forum. I have a 2005 sportsman 700 carb I’m having trouble with. Quad has a miss at low speed but clears up if you stab the gas. carb and has been rebuild and it has a new cool, problem still persists. I have read that some of these had a bad dukati ignition but not sure if mine falls in that category. Plugs, fuel filter, carb boot, vent hose all check out okay. Any help would be appreciated. Thanks