I have an Oklahoma Joe smoker and have done most of the common mods, gaskets, clamps on the smoke chamber door and fire box, charcoal basket, internal elbow on stack, and I even have a pit controller. My dilemma is that most of the time I don't need 30" of grill area to do a pork butt or some ribs for my wife and I and it takes a lot of fuel to heat that big cook chamber. So I had an idea to make a divider that I could move to create a chamber as big as needed for the cook. I did a search but didn't find anything on this topic. I thought I would try it out by making a round disc cut to fit the inside diameter of the smoke chamber with a center hole, from 3/4" plywood and wrapping it with aluminum foil. I have three grill grates so I could move the divider to have 1/3, 2/3, or remove it all together if I need the entire chamber. If it works I'll make one from 3/16" steel plate. Any reason this won't work? Ideas?