So, yesterday I brought the temp up to 650 to cook a pizza. It got down in the 20's last night but the 1250 had no problems getting to temp and holding. I did remove the foil from the diverter tray. Left it on for 10 minutes and over cooked, but the flavor was really good. Just the right amount of smoke. The edges of the crust burned a little, but the underside was just right. I think 8 minutes would have been perfect. I did use a stone but covered it with parchment paper. Next one will be perfect!