Remove the charcoal pan from the body of the smoker.
Drill eight holes on the bottom side of the charcoal pan, using the 1/4-inch drill bit. Doing this will allow more air to get up into the charcoal during the smoking process.
Drill eight holes, evenly spaced, on top of the dome lid. This will promote more airflow, which will assist with the smoking process as well. The holes should be drilled in a 4-inch area on the lid.