This S6 was acquired last summer at which time it played and sounded great. A rattle now occurs whenever I thump low E, particularly noticeable during wet weather, which we've had little of until now... The rattle disappears with a very small amount of pressure to the top below the bridge. There are no apparent issues with the top, it looks solid.. A light and mirror aren't quite adequate for a good visual.
Ideas and suggestions would be most welcome. I realize it might be time to visit
The 12th Fret, which I've not yet had the pleasure of.
Jerry