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5.0
Timber Bass mods for Graphtech Ratio Tuner Upgrade
Enlarge tuner holes in headstock to 0.386” (drill # W). Note the different tuner configurations for left and right side. Install so the tuner grip is above the peg, toward the top of the head stock and Ratio logo reads upright. Mark tuner alignment pin holes by pressing tuners in place, and spot drill with 1/8” diameter drill no more than 1/16” deep. Flat washer and nut install from the inside and tighten with 10mm wrench.
