Just recently I had marble floor tile installed in my kitchen. I purchased HG Impregnating Floor Sealer and attempted to apply it as directed. It turned out okay for the most part however some spots near the grout lines left a visible line on the tile where the squeegee overlapped. How can I remove the sealer from these particular tiles so that I can reapply the sealer. These areas also have some fine air bubbles which need to be removed as well. Any suggestions would be greatly appreciated. I was reading somewhere, that wet sanding may be an option. Anyone have any comments on this?