As a former and future stumps owner, let me say, Congrats! These cookers ROCK! That being said, do yourself a favor and always use a folded over sheet of HD aluminum foil between the charcoal chute and the lid of the chute. This will keep your gasket free of creosote.
Also, I would use chunks in the ash pan and bang a little on the charcoal chute grate. This would drop a few pieces of charcoal onto the chunks below. It will create a nice even smoke. Sometimes I used chunks in the chute but found it unnecessary. Some people believe that part of the beauty of a stumps is that the smoke has to pass through the fire (when using wood in the ash pan only) before it enters the cooking chamber. They feel this purifies the smoke of any additional contaminants. I don't know how realistic that is, but it sounds nice!