I am installing a Lopi Freedom into this fireplace. My mantel is 47' from hearth. Lopi requires 52 1/4. Any ideas of what i can do besides the normal heat shield behind surround or piece under mantle. If I go with the flush kit for the Lopi my mantel will clear. Is it worth keeping it extended with mantel shield vs flush with no mantel shield. Is there that much or a difference in performance making it flush? Any help or ideas would be greatly appreciated. Thanks