My friend's kid is interested in the bass and so to see if she'll stick with it I told my friend I'd get something together; I put together a P-bass copy out of I believe mostly a Jay Turser. Surprisingly enough I got the action and intonation better than most of my own instruments. The only hold up is the bushing tuner hardware doesn't grip the headstock and rattles when I play an open string. Any cheap fix ideas? Trying to keep this project as low budget as possible. I was thinking sticky tack?