Yep, they tend to cool down when you do volume and pull the heat out. You could heat em up a little higher before the slam but risk changing the bake quality. If the existing ovens are working fine, you could add a few ovens.I saw you inquire about the Peerless. I used Comstock Castle pizza ovens(3-double stacks) for my mobile food business and they worked quite well. There are several different sizes with 2 stones per oven. The bottom stone crisps the crust so the top stone is best for preheating heavy topping pizza such as a veggie before finishing it on the bottom stone.