Lately i tried adjusting my Demon 850 DP carb and it is running really really rich right now, like burn your eyes and nose at idle kind of rich. The butterflies are set to be open equal amounts, mixture screws are out i think 2+ turns. If i try to lean it out at idle, it idles fine but once the secondaries open, it stumbles/pops through the carb. If i keep it rich, it runs ok but its just killing my already minimal gas mileage. Carb has stock jets in it which i think are 84 in the front and 93 in the back, seems a little big. Any ideas?