Yamaha C7 Pinblock Fit

[jolly roger]

Hi Ric,
           Fortunately in this case it was a warranty claim.  Yamaha
replaced the piano. 
But I have fixed  this kind problem on another rebuild job.   With the
plate out and the piano on its side,  epoxy, clamped and doweled every
thing back together. West system thin epoxy was used.  We had the piano up
side down so the epoxy completely filled the crack before clamping. 5 or 6
yrs later the piano is still very stable.
Having trouble setting just one unison and having the section very unstable
is almost the identical symptom.
Regards Roger

At 11:03 PM 1/12/01 -0600, you wrote:
>
>
>----- Original Message ----- 
>From: jolly roger <baldyam@sk.sympatico.ca>
>To: <pianotech@ptg.org>
>Sent: Thursday, January 11, 2001 9:10 PM
>Subject: Re: Yamaha C7 Pinblock Fit
>
>
>Hi Todd,
>             The tuning stability problem sounds very bad, I have no doubt
>a new pin block may be require.
>But for what it is worth, I had an ultra unstable Yamaha, and it was caused
>by a seperation of the inner to outer rim.  It may be worth a close look.
>Check the bearing carefully with a compound gauge, over the 2 week tuning
>period.
>Regards Roger
>
>
>Hi Roger,
>    Were you able to fix this?   -=-ric
>