I will using a hearth classics corner hearth for my install of a BK princess. The website stated that if the stove is under 450 lbs the hearth can be installed over carpet. The princess comes in at 430 lbs. Do you think they consider the weight of a full load of wood? I have access under the floor that I could run some screws around the outer edge to prevent any bowing. Trying to avoid having to cut the carpet but will if needed.