Oh, OK. Opening just looked really small in picture and couldn't see top of stack. That is the same spreadsheet I was gonna send you, but I don't think you will need it now! I will have to measure my smoke shelf, because I can't remember if I put a pitch on it or not. Weird that you are getting that much of a temperature difference!
JayBirde,Team Captain of Limp Brizkit BBQ www.LimpBrizkitBBQ.com (Work In Progress)