Using BGE charcoal one inch or so above fire ring vent holes with both top and bottom vents wide open with plate setter and pizza stone raised slightly above plate setter. Let it heat up for around 30 minutes and could only get dome temp up to 400. Pizza took over 30 minutes to cook and I couldn't get the stone hot enough to crisp the bottom before the top was done. Tried cooking with the stone right on top of the plate setter before but it burns the crust. Do I need more coal? Any help would be appreciated. My wife won't let me use our oven for pizza anymore.