Hi Everyone, So I've embarked on building my first offset smoker. I've had a 30" MES for a few years but have decided to try my hand on an upgrade. I found a 120 gallon vertical propane tank (pictured) as well as a 24"x24"x3/8 piece of pipe (pictured) on CL. I've currently got the propane tank soaking with soap and water. I plan on building this as a true offset. I may put tuning plates in later but would like to try w/out at first. I've been putting #'s into Feldons. I've seen the one Mr. Omak has as well but not sure if required to use it being it is not a RF. If I should use it anyhow, let me know. I will post my #'s fron Feldons as well as what I came up with from the circle calculator. I'm sure there are holes in them that you guys will find. I'm not really a good math guy so any help is greatly appreciated. Thank you.