Hello, I was thinking of mounting wall brick behind the stove but I wonder if it is possible to mount on uneven and different surfaces. We have the chimney behind the stove but then the wall transitions to a wooden wall, and these are not level with each other as you can see in the pictures. What should I do? If I put drywall behind it, the wall brick will protrude quite a bit in relation to the rest of the wall and the visible ceiling beam.