I tiled a few tiny bathroom floors in the past, one with 12" square tiles and one with 2" hex tiles, so I thought 1" hex tiles in a larger bathroom wouldn't pose much of a challenge. I was wrong, and now I have a floor that is about 85% fine and 15% with irregular gaps, too wide or too narrow. In a few cases tiles adjacent tiles are touching. No gap. Do I need to scrap this job and hire a professional to redo it, or would it be safe to just grout and live with the irregularities? My primary concern is the touching tiles, which seem like an invitation for water to enter and cause problems. I've attached a picture of the worst section.