I just got a Kamado Joe Classic for XMas and was going to smoke a butt on it for the first time. I watched some videos and each one only shows adding wood to the fire box one time. Is this accurate? I don't have the version with the grate that has the door to add more wood so I would have to do some work to add more wood. I don't mind doing the work, but was wondering how often I should do it. Thanks in advance for any advice!!