Key Level ? Revisited

[Andrew and Rebeca Anderson]

On that Kranich & Back by Baldwin (horrible mini grand), the keys 
visibly drooped in a short section.  The hammers were up and I 
couldn't pull the action directly out.  No problem though, loosen the 
key 'up-stop' rail and they all came down.  Try 80F & 67% 
RH.  Interesting that it made a handwidth sized dip like that, 
centered around one pin that was too low.
There was relatively little in the way of foreign objects.  There was 
a sticky substance on the board by the upper end of the damper 
tray.  Got that cleaned up.

Andrew