This is a new pool- they are to come back for touch ups. I keep finding small holes in the grout between tiles, and now, where the tile meets my aqua blue pebble sheen. The pool is full. How important is it for these to be filled and should I be concerned about the construction/workmanship because this has happened so soon? Is this nomal? This pb is reputable in my area but has made a couple of large, time consuming mistakes that should not have happened..