Today I got a brite idea that I would buy an unbaked pizza from Papa Murphys,take it home,fire up the BGE, and have pizza and beer for supper. I preheated to 425 D. The pizza instructions said to leave pie on the cardboard tray. So I just put the pie and tray on my baking stone. I then put the stone with pizza in the BGE without the grill. I couldn't get the temp to rise back up to 425. Even with dampers fully open. It stayed at 300 D. The crust turned black and the top never did "bubble". The beer was perfect. What can I do next time?