I tried using a 4 ply layer of aluminum foil to even out the right rear hot spot and it worked pretty good. I want to try using a piece of tile next. From what I've read here, people are using anything from 6"x6" to 12"x12" tile. Also, the tile is anywhere from held directly up against the walls to 1 1/2" away from the walls. What are your experiences for the best size and location? Obviously in the right corner, but I mean should it be right against the walls, leave a small 1/4" gap, or leave a 1 1/2" gap? Or something different all together? Thanks, Doug