Hello Friends: I'm new here, so pardon the "dumbass". I'm overhauling a 25 year old fretless with an ebony fingerboard. I'd like to add some brightness in addition to a general reconditioning. I know that Jaco always added epoxy. I can see some wear marks from the strings, and planned on giving the ebony a little sanding. For the sake of high frequency tone and neck preservation, does anyone have any advice?