Ok so my smoker is going with a rack of ribs. I have a coffee rub that I let set overnight. I was having a difficult time getting my square virtical Brinkmann smoker up to 225. I thought adding boiling water to the water dish would help get it up....that didn;t seem to help all that well. After awhile the water dish went dry and the temp went up and held steady around 238. What is going on with the water dish!!?!? Any suggestions? I had the vents open all the way and when the temp starting going up I had one bottom and one top vent closed and it looked to be working well.