You want to use the Cast iron pot with holes at mainly the bottom. You don't need tape for that Pot. You may still need to close a row of holes on that pot too. But you will want to use 2,000° furnace cement (sold in tubes at almost all hardware stores). Also, take some aluminum foil and cover the qir wash on the sides (leave about 50% in the middle open, cover 25% of each side). Do a search up top for numerous threads that talk on the Baby and its airflow issues. Here is a pic of the pellet pot and also note the furnace cement in the 2 rows of holes. Do this to the front and back 2 top rows.