PLease ignore, I posted to wrong forum

Either the use of a thicker bed of thisnet or by using something to bring the mosaics out a little further. That could be something like Ditra, which would bring it out about an 1/8", or if it doesn't need to come out that far, they could even use strips of Kerdi or some other membrane to build it out in a uniform manner. No self respecting pro would tell you sorry, that's the way it goes! If they can't, or won't do it right, I'd hand them their walking papers.

You paid for Walker Zanger tile in the first place. Is there any way you can send them the tile and have them lay it out again and paper the front for you? After all, the paint has been removed and the tile is intact. I understand that you're keeping the same installers in part because they are picking up the tab for replacement tile, but if you can salvage the WZ at this point, maybe you should have someone else install it. Cheating indeed. Jeesh.

Home center stores often carry brand names - usually a limited choice, but still great if you can find what you want. The one thing I will not buy at a home center store is a kitchen or bath faucet that will get a lot of use. The faucets even of the name brands like Delta are more plastic and often have a faux finish - looks like chrome or bronze but is just a plastic look alike. I have used home center tile and my tile installer, when I am not doing it myself, said he has no problem with home center tile. In general, he is very picky. I would watch out for the spacing of small tiles on mesh. I have not had any problems, but I have seen people, just today, have problems with penny tile and small hex tiles unevenly placed on a mesh and the tile setter did not bother to cut the mesh apart and make sure the tiles were evenly spaced. Those may have even been expensive tiles. The OP didn't say, but that is something to watch for no matter where you get your tile if using a mosaic or small tile.