I have white tiles over the kitchen counter with white grout that is poorly executed. I see that it's easy to remove the grout with a Fein MM but won't parts of the grout remain on the curvature of the tile edges? If you scrape there, isn't there a risk of scratching the tiles so that the new grout gets stuck in the scratches? I'm considering a grout in a different color than white.
Grateful for any tips.
