I've been lurking on the forums for quite a while gathering info for the build I'm getting ready to start and figured it is about time I post and document the build process, ask questions, and hopefully get some sound advice along the way! I'm starting with 24"x61"x3/8" Wall Steel Pipe. The pipe cost me a few beers at the bar so I'm already off to a good start. I found a 24" Dome End Cap to mate on the far end of the Cooking Chamber. I've plugged the information into the calculators online and wanted to go with a 24"x24"x24" Firebox; however, I have a question about how high up on the Cooking Chamber to mount it. The calculators are saying I need about 120 sq inches from the FB to the CC. If my firebox is 24" wide and I mount it at 18" across the pipe will it be a big deal to have 6" extending over or should I narrow my firebox to 18"? Most of the posts/pictures I've seen show the FB to be the same width as the CC and I'm curious if I will have any problems if my FB is wider than the cooking chamber. Any feedback would be great. Here's a quick picture of the Pipe, hopefully I'll be picking it up in the next 2 weeks.