yamaha p22 instability

[Ron Koval]

Hi everyone-

I worked on a Yamaha P22 last night(#225454)- my first time there, 5th 
tuning for this instrument.  Pin and string movement seemed fine, piano was 
only about 8 cents flat,  but it just wouldn't stay put! (imagine that, a 
piano creeping all over the house)  I finally got the unisons to stay clean, 
but it just wasn't a 'normal' Yamaha tuning for me. Has anyone out there run 
into this?  Is there something I need to check?  No sunlight hitting the 
strings, no heat kicking on . . . it had me scratching my head!

thanks

Ron Koval
Chicagoland
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