I have used my 18" WSM for many years. Recently the lid has started to stick to the body of the smoker and I can almost lift the entire smoker off the ground when lifting the lid before the lid breaks free. I have no idea how to clean the years of build up but thought I would find someone to steam clean the lid where it comes into contact with the body as well as the area of the smoker body that comes into contact with the lid. Any other ideas?