My brand new bass (SR305) and my older 5 string both do the same thing. Play the 4th fret on the G string and the A string also vibrates and sounds off, and I just tried the 2nd fret and the E string will vibrate enough to be audible. Like it transfers the vibration through the bridge. I think there's one or two more notes on the G string that will cause it. They have different bridges on them but the saddles all stick close together on each bass. Do I need to angle them to prevent this? I wanted to ask before I messed with that. All I've done so far is lower the action, but it was doing it before and after. I can of course mute the strings, but I didn't think they were supposed to do that. The 4 strings don't do it of course. What's the deal?