How to diagnose YC Expanding Action Brackets

[Dpshans at aol.com]

Rick,
 
Another action bracket tip off would be the serial number of the  piano.  The 
range I've heard several times is in the 60,000 to 96,000  range, although 
I've replaced brackets on a few Young Changs in the early  100,000s.  
 
If the brackets need replacing, it's a straightforward job.  The piano  is 
probably ready for a complete regulation and voicing by now.  
 
Daniel F. Dannenfelser, RPT
Sacramento, CA
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