Question for all the DIYers and builders. When you do the final hardware install, do you pre-drill holes for the pickguard and strap buttons? I assume so, but want to make sure before I do it. And if so, what size bit works best? How do you insure you don't ruin the finish (I've heard of putting down some tape and drilling through the tape into the body)? I know it's elementary, but I had to ask. My project has turned out well so far and I don't want to screw it up this late in the game.