I JUST FITTED MY NEW FIBRE GLASS BATH AND IT LOOKS GREAT... THE HOLE BATHROOM NOW TILED ROUND THE BATH.. BIG MISTAKE.. NOW I HAVE FOUND AFTER CLEANING THE EXCESS GROUT FROM THE BATH I HAVE SMALL HORSE SHOE SIZED HOLE THE SIZE OF A FIVE PENCE PEACE.... HELP WHAT CAN I DO... THERE MUST BE SOME SORT OF...