This will probably be the last project I use MSI tile on. Between the mismatched sizes and the warping/cupping, this is taking FOREVER. Each piece here took 3 or 4 tries with different pieces to keep the lippage to a minimum. With the exception of the 6 pieces near the doorway, it's flat and it's level. The 'cheat' towards the doorway is less than 1/8" in 4 feet so it won't be noticeable. I'll 'fade' that out over the next couple courses so the washer, drier and fridge will all have level floor to sit on. I'm cold and frustrated and I'm done for today.