I recently smoked a brisket in my little Webber. I used apple wood and put apple juice, apple vinegar, and water in the drip pan for moisture. About 4 hours in my smoker started to have this sticky layer inside it. It made it very hard to open to wood door or take off the lid. At one point I lifted the lid and the middle part of the smoker lifted too. It hardens when cool but when I heat it back up it becomes sticky again and I cannot get it off. I'm actually considering pressure washing it tomorrow. Have any of you had this problem or know why it happened or have a solution? Thanks!