I installed honey onyx tiles around the deck of my whirlpool tub with gap about 1/4" and used unsanded grout on them. However, I found out afterwards that I should have used sanded grout because the gap is greater than 1/8". Should I remove all the unsanded grout and use sanded before the tub is installed? If I don't re-grout with sanded it would be very difficult to remove the tub later if the unsanded grout cracks. Thanks.