I have a 3.7# BCC on the smoker (brinkman Snp). Dr Pepper in the can with rub, smoker is at about 250. It's only been on about an hour, and it already at 117. I reed that it should take roughly four hours, but at this rate? I must admit that I may have placed the temp probe incorrectly, so I'll post pics in a min. does it plateau like pork butts and briskets?