Hi All, I lucked out and got a really sweet 1950's Admiral. It's heavy as a tank with all metal on the inside but for the freezer door and the door seals. Before I begin, I would like to understand why some do one thing and others do another. I know some things are just personal preference but there are some things done which I am sure have a really good reason. I am not looking to spend a lot of unnecessary money or "pimp it out". But, I do want to make the smart decisions so I will have an efficient, well made smoker. Here are my questions to get me started. Thanks in advance! 1. Why do some pull out the old insulation and replace with Roxul and some just leave in the old insulation? And, does Roxul make that big of a difference.? 2. Hot plate versus heating elements? 3. Fans versus no fans? 4. Temperature controller or not? I have an old pot bellied stove (it's short & squat) which I would like to use as an external fire box but I"d also like to have the option of an inside heat source, such as an element or hot plate.