True story, probably 3 yrs ago I get a frantic call from my VERY frustrated little brother. His wife had bought him the add on FB for his Chargriller and he was hell bent to knock out some ribs better than his big bro. According to him he had burnt through a whole bag of Kingsford and even though the new FB was glowing cherry red with all the paint curling and falling off ... his ribs were still basically raw after 3 hours. I pulled my car over and we started working through the smoker checklist for heat transfer and air flow. HELL YES the vent was wide open he screamed at me when I asked question number 1. Question number 2 ... how big is the opening between the FB and the CC. ....... crickets ...... total silence ... followed finally by "call ya back". Big ole dummy had never knocked out the punch out section when he attached the FB, he was basically radiant smoking with zero air flow from the FB.Gizmo_Rick wrote:a CharGriller with a firebox just bolted on the end of the cook chamber and I burned the fireproof paint off the firebox trying to get the CC up to temp…..