5/16 inch (in a span of 7 feet) between the nice new dark granite backsplash top and the bottom edge of the existing white ceramic 4-inch tile back splash. The orig. floor, cabinets and counter-top are level. The (12-year old) ceramic tile was not installed square to the floor. I can place the edge of a level in the horizontal joints of the tiles and see the pitch...ugh. So far, I have considered applying a bead of clear paintable (DAP) caulk in this opening. I "thought" the granite company was to have made accurate templates for the back splashes they installed.
Thanks for any ideas, Gary