I have A 5 sting Moon J with 18 mm spacing and my other bass is a Atelier Z J with 19 mm which doesn't feel quite as comfortable to me. So I'm looking at changing that 19mm existing bridge on the Atelier Z out to a 18 or 18.5mm Hipshot A style bridge. I'm thinking that going a little narrower might not be a big deal on the neck or on the pickup spacing.Not sure though if 18 mm might be too narrow on a neck that's designed for 19 mm. Has anybody here made a change like that? That Hipshot bridge comes in Aluminum or brass. Would there be a noticeable difference in tone or sustain?