I'm fairly sure I know the answer, but I thought I'd ask those who definitely aren't guessing on this stuff: I have a neck that I need to install some tuners on. The tuners I have available don't fit the pre-drilled holes (one set's too small, the other too big). Can I use the set that's too small, or am I risking problems? Would I be better off drilling out the holes to fit the other set? In general, is it recommended to have the shaft fit the holes exactly? Thanks.