Tom, I, too, have noticed this same action or re-action when pulling pianos up to pitch especially on less expensive instruments and usually for me especially at the break in the treble section and up. I tend to agree with Joe Garrett. I do believe it might be for a lack of a better word "overpull" ....twicking the string down to high side of the pitch or maybe it is the "rolling bridge". Whatever....what's the best solution? Tommy Black Decatur, Ala.
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