We're installing a shower head base that requires four anchor holes. Mistakenly our "guide" didn't account for an off center pipe. Now our holes are just slightly off and don't match the anchor. In order to use the shower head we'll need to "move" the holes somehow. What are our options? Is it possible to fill and redrill? Is the best option to replace the tile and start over? But the dry wall below has already been drilled. Regardless the holes are going to need to be filled somehow even to use the old shower head to prevent moisture in the wall... I'm a bit thinking out loud here but any recommendations would be very helpful!