Hi Tara, We are in the middle of a similar tub/show remodel with a framed under-mount tub, topped with a marble deck. Our contractor recommends cutting diagonals at the corners of the deck to slightly tilt each of the four sides to divert shower water back into the tub. Did you do something similar here? It's hard to tell from the pics. I'm not sure how conventional the idea is and how it will effect the overall look. What are your thoughts?