I just got a commercial food warming oven for FREE!!!! I thought I might be able to modify it into a smoker. But I need some help. Not sure what I need to do. It has a little box that goes in the bottom of the box with am element. I would prefer to change it over to a propane style smoker. this commerial warming oven looks like a large frig, it's about 7 feet tall. Any ideas that you all may have would be great.