Hi C falling

[A440A@AOL.COM]

Greetings, 
    In an earlier posting, the question of how much high treble droppage 
occurs during a pitch raise.  I have now raised two new Yamaha C2 pianos 
after tuning the C88 to pitch. 
    In a raise of 8 cents in the bass, 12 cents in octave 3-5 and approx. 17 
cents onward to the top, the C88 dropped 10 cents.  The other piano was 
almost exactly like this, also.  I was surprised,  I had always thought of 
the very top as being less affected than this. 
Regards, 
Ed Foote RPT