Hi! I have a new smoker for me, a friend of mine was throwing it away as he bought a new one. I was offered it and it is in good shape but clearly not cared for properly. It is a Char-Griller with side firebox and I made my first brisket on it this past weekend. All went well but clearly the internal thermometer is not right as it told me I was smoking at 190-200 all day. I am also unable to control the fire in the side box as well as I could with the UDS I used to have. I know there are a lot of posts for the Char Griller and I have done some of the mods already. I really need to know the below few questions: * How can I re-calibrate the thermometer if it is at all possible? * How can I maintain a better more consistent temperature between 225-250?