I used my Vortex for the first time last weekend. Did chicken thighs and legs. Had bottom vents open and top half way on 22.5 kettle. Turned lid couple times without taking off for 30 minutes. The chicken skin was completely burnt. I was trying Grace Jerk Marinade. Usually use Walkerswood. May have been the marinade that caused it. I am doing wings this weekend. I was going to use weber rub but it has sugar listed about 5 down. Not sure to use it or not now.