A tip for any of you that clean your basses time to time - DO NOT take the saddles off the clean the beneath the saddle springs. The bridge saddles have a VERY small and very fine wire that stretches from a hole in the bridge to a hole in the saddles. This undoubtedly provides a connection for the piezo magnet. On going to clean the bridge the other day, I unscrewed one saddle to find it came off loosely. Presumably, this had become detached through natural wear and tear. I now have no bass. I then discovered the G saddle screw has been screwed incorrectly into the saddle. It's jammed and in trying to unscrew it, it broke the other piezo wire. I now have no bass and am waiting on repairs...if they can repair it. Gutted.
This was my first time properly cleaning my instrument, after discovering there was dust (SHAMEFUL!) under the bridge saddles when the lights on stage shone on my bass.