this may be a stupid question but I was wodering if anyone could tell me if I add one more vent on the top of the smoker if that will lower my internal temp in the smoker? I can get it as low as 120 degrees or so but, I would like to go lower. I am using a propane burner and on the lowest setting I cannot get any lower than around 120, I want to be able to do cheese and be able to dry out the casings on sausage before I smoke. Will adding another vent drop the temp to where I want it? any suggestions and help would be greatly appreciated!