| You adjust the height of the saddle with an allen key which should have come with your bass. If you did'nt get one, your local hardware store will sell you one, or the guitar tech at your nearest music store. Height is a personal thing, so you will need to experiment a bit. If you play hard you will need a higher action, if you play soft, you can get away with a low action. A rule of thumb for a medium low action seems to be about 3/32" under the G string, measured at the 12th fret, between the bottom of the string and the top of the fret. A 6" steel rule is good for this. Set the E string at about 1/8", and the other two strings accordingly, so that when you look down at the strings when your bass is strapped on, they follow the curvature of the fingerboard. If you get buzzes or rattles, take the saddles up one turn of the allen screws, retune, and try again. Take your time, and you'll end up with it just right for you. | 
