Hi, I’m a new owner of a Jotul f45 and absolutely love it. I burn birch. I use a stove top thermometer per Jotul’s instructions, and like to keep my burns in between 325 and 550. My question is this: in the coal stage, the temp will drop below 300 into the “creosote” zone. But my house will still be warm and I’m not ready for more wood yet. Is this safe, or am I producing creosote with a coal bed below 300? Thanks!