Hi - We run a Pleasant Hearth cabinet stove. It apparently overfilled overnight - woke up to a raging fire (unburned pellets on the floor of the firebox, outside the burn pot). Turned it off, waited for it to cool, cleaned everything well. There are scorch marks on the bottom of the firebox and a bunch of burned-on gunk on the door glass. Any insights or advice? Thoughts re whether it is safe to run?