The last couple of cooks (bristets and butts) I thought the WSM was running a little cool but the lid thermo said I was right on so I attributed it to the cold OAT and wind. I use a digital thermo for meat temp. Well I checked the lid thermo today (going to prep some chicken for tomorrow)and the thing was about 35 degrees off. The Taylor digital was right on. The meat did come out great but I'm sure it was because of the mass of the brisket and butt. Haven't done ribs in a while but I'm sure the misreading thermo would have messed them up as I never used the digital; just relied on the lid reading. To be sure I'll check accuracy more often. Also I'm heading over to Stogies camp and going all digital.