I have a question about ash build up in the burn pot . Should the ash build up on the edge just before falling off or should the burn pot fill up. I pull the ash out of the pot during the day. The picture is about 12 hours of burn. I still have flame but the pot is filled up. I think if I let it go , it would kill the flame. Or could it be my home depot pellets, Or, Do I have an air restriction under the burn pot where the igniter is . I do clean the ash out from under the burn pot with my finger at least every 2 weeks. Is air suppose to move thru there and thru the holes in the burn pot to move the ash? Your thoughts please. Thanks , Matt.