Problem - -have an answer?

[Ron Nossaman]

>     I had this happen once on an older upright.  I found the bridge had 
> actually parted company with the soundboard at its end.  

Oh yes, the cat on the screen door syndrome. Drop the bass 
string tension, and the bridge falls to the bottom of the piano.


>Take a feeler 
> guage and see if there is a gap between the bridge and soundboard, it 
> might be tiny but enough to create the problem.  Its a long shot, but 
> worth a look.
>     Mike Kurta

Not that long a shot, and definitely a possibility.
Ron N