Looking to add a warming box\cook chamber to my RF. I am thinking of making it 24x24x30-36 with several rails to make adjustable for different meats. Goal is to cook more meats and hoping to get into cooking contest or cook-outs. I want to use the extra WB to cook as a CC if needed. I saw a few photos but not much detail to what I need. Please advise if I am wrong or need new ideas. Going to cut about 4-6" off tank to put a plate against it and make more room for WB. Adding second stack for smoking or CC. Adding a hole on side plate with plate to open and shut to make box a CC or WB. Need to know where and how much openings I need on the WB. I may need to cut my existing stack inside CC shorter, if I need to leave alone I will, notice it's at the bottom rack. Photos below.