Hey, Just got my new Oslo delivered, not yet installed. Noticed that one of the firebricks in the back of the stove is cracked and very loose. The firebricks stand on end. The other three do not move at all. Crack goes from left to right, horizontally across the firebrick. It isn't that deep yet. What do you guys think, swap stove out now before it's hooked up? Hate to spend all that money and not be satisfied or have issues down the road.