The simplest test for aliquots is to get some silly putty and stretch it out along the open strings and let it settle. I carry two eggs of the stuff in a better container and use it often when I want to really hear the treble when tuning. I can get better octaves and unisons in the last octave that way. It is extremely effective and safe for strings and people. One other source is open strings from bearing bar to tuning pins if the pins are too high or the damping felt between is too thin. Is there another piano in the studio? Newton
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