Steinway D Duplex

[Delwin D Fandrich]

Dianne Salem wrote:
> 
> List:
> 
> I am working on a Steinway Model D that was rebuilt by another technician
> about 2 years ago.  The middle treble rear duplex has been shimmed up by
> just over 1/16".  I wonder if anybody has had any experience doing this and
> if so, what would indicate the necessity for this, and what were the
> effects both positive and potentially negative...  Also, duplex bar in the
> raised section is not aligned at all properly, i.e. 4 strings up on one
> aliquot, 2 on the next, one down, 3 up, etc.  This will be realigned, but
> would like some input on the shim at the same time...
> 
> There is a very "dead" section in this piano (Octave 4) that none of the
> obvious has remedied -- section just below the raised duplex section.  This
> is our concert instrument here, so any input on these matters would be
> greatly appreciated!
> 
> Respectfully,
> 
> Dianne R. Salem, RPT
> California State University, Fullerton

Questions:

What work was done to it during its "rebuild" and how old is the piano?

--ddf