Hi Craig,
ML did say they have had to use a different supplier and that their tiles are a different shade, not sure if they have had to cut them because the ones on the terraces seem to be a non-standard size. I've noticed a number of tiles around the resort where the coating is worn but we have about a dozen on our terrace where patches of the coating have come off completely. I guess that's why they don't make them anymore!
I think I read, maybe on here somewhere, that the theory was that a few bad batches had been used, looks like we were the unlucky ones :-(
Must try and find out where the ML substitute tiles have been used to see how different they are...
Cheers,
Craig