Trying to upgrade to vintage style Gotoh tuners, but the tuner holes are a bit too large for 3/8" conversion and too small for 10.2 / 10.5 mm bushings. Is using masking tape or other material to enlarge bushings frowned upon / has serious downsides? Foil? Thin sheet metal? Rather not mess with the headstock itself, but tired of buying and returning wrong bushings. Thank you!