I have a '93 Warwick Fortess One. It was the first year they made the bass and it has since been discontinued (sweet!). I put some nice Bartolini's in it (P/J) and an East pre-amp. It is outfitted with Brass frets, and a Brass nut. I was thinking about taking out the Brass nut and replacing it with the new "adjusta-nut" that Warwick makes out of some carbon material. Is this a good idea? Will it do wonders to my tone or really not make a difference?