Hi all. I'm new to this group and looking for some advice on a smoker I'm starting to build. I have a propane tank (36" diameter and 12'4" long) that I am converting. I'm looking to do an internal FB. I came across this group because I found Smokin-aces design in a search and it is just about what I wanted to do. This is because I couldn't figure how to make a reverse flow work, but he seems to have accomplished the same thing, which I was hoping that design would. From what I have read, the design is similar to the Jambo design. I'm wondering if adding a RP under the cooking grate would help. I'm hoping is would because I would like also use the RP for a grease collector/liquid reservior. Also, I am wondering about designing the FB so i can do dutch ovens at the same time. I've thought about a downdraft firebox, but haven't found much information on it, in conjuction with being used on a smoker. Thoughts?