So i purchased a big green egg from a garage sale and they put a hole in the side of it to but an electric heating unit. I have removed the heating unit and got everything back to normal except the hole in the side. This is causing issues being able to regulate the temps and to put out the fire after use. Any ideas on how to patch up the hole. I was thinking about a metal sheet on the outside and using JB weld to secure it. I think it may help seal it up from the outside but am looking for some alternatives.