[Bludawg]

I the Stick burner I keep it to +/- 25 deg every thing else pretty much chugs along a few deg either way. Like HellSmellsLikeSmoke said cooking to probe tender is more important. The oven in your house cooks in a Zone too average of +/- 20 don't expect better out of your pit. That thermo is just a tool and IMO a calibrated analog is a better tool if you like to sit and gawk at it as they react slower and fluctuate less.