I live in Pennsylvania and having had a very wet spring and summer last year, by September I was having trouble getting my oven to retain heat. It was suggested to me to do a 12 hour burn to dry the interior out and then regrout the floor of the oven. I just did the burn and noticed that shortly after actively burning wood in the oven the temp drops to the 500's. Does anyone have any experience with a 5 year old oven needing maintenance and does everyone's oven temp drop 200 degrees so quickly ? Maybe that is normal. I know 700 or so is the best for baking pizza. I just struggle to keep the temperature high enough.