I have a Brinkman Vertical gas smoker and have been having a lot of smoke issues. I couldnt seem to stop smoke from boiling out of every crevice of the smoker and I ruined a couple of fatties last week. so I am out playing with it today and raised my chip pan up a few notches. Now, my chunks are doing a nice slow char and producing smoke. The problem is, there is so little smoke you cant even see it come out of the top vent. I know the goal is TBS, is it too little when you cant see it?