I have a ProQ Excel 20 bullet water smoker. The ProQ is also know as the Apollo here in the US and Canada but it is basically the same design as the Weber Smokey Mountain with some improvements. Today is my first use of it but I am having a problem getting my temp hot enough. I have 3 thermometers going and different levels. The bottom is doing alright a 230F but the top is only at 220F I would like to get the top up to 225F and keep the bottom below 250F. This should be doable but I have all 3 vents fully open right now so I can't really give it more air short of opening the door which seems to let out more heat. Any suggestions on how I can get that temp up just a bit and keep it stable?