I have a 40" Masterbuilt electric smoker, After the smoking process I generally put all the removable items in the dish washer and wash out the inside of the smoker with soapy water. I try to get the side walls, back and pay special attention to the glass door and seal. My question is should I allow the side and back walls to accumulate smoke residue? My thinking is this would create an extra seasoning affect for the smoker. Do most of you wash down the side walls?