A few of the many posts written on the subject in years past. Cheers RicB https://www.moypiano.com/ptg/pianotech.php/2000-February/059592.html https://www.moypiano.com/ptg/pianotech.php/2000-February/059731.html https://www.moypiano.com/ptg/pianotech.php/1999-February/043009.html https://www.moypiano.com/ptg/pianotech.php/2001-March/082087.html
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