I have a Preway Zero clearance fireplace. I think the model is BE41ST, the plate is not in good shape. It has a blower built into it however either the engineers were morons or it was installed wrong. There is a void under and over the fireplace with vents. The blower is in the lower void. The brick that the fire burns on is above the lower void so there is no heat for the blower to push through. All the heat rises, obviously, and heats the top of the fire box. Is it possible for it to be installed in the wrong location??