I don't like the saddles that come with the Fender American Standard (2007) Jazz bass I have. I didn't like the ones on the Am. Deluxe I used to have, either. The E string always sounds a little weird to me and I'm not interested in using a taper wound E string. A Hipshot (or comparable) bridge will cost more than I want to spend. I was thinking about just replacing the saddles with Graph Tech or something else. Do the adjustment screw/saddle thread sizes vary? If so, does anyone know what will fit? Thanks!