I've been looking through forums trying to find some advice on this, but have been unsuccessful. I realize this isn't a very interesting topic, I was just hoping someone could help! I play electric, and recently bought an inexpensive double bass. (DeVilli 4-string, 3/4... nothing fancy) Anyway, I'm going mad trying to get this bridge to keep from collapsing!!! I even went out and bought a level to make sure it was evenly balanced. I measure from the bridge's feet to notches in f-holes on both sides to make sure it's even, and it still falls apart every time I attempt to get it in tune. I read somewhere to use a pencil and color in the notches on the bridge to make the strings slide more easily during tuning, but this doesn't seem to help either. I really have no idea how to remedy this, and its making me very unenthusiastic about playing upright. Any suggestions would be quite appreciates. Thanks in advance!