This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment So what about impedance matching of the key and hand/arm? Or the center = of percussion of a key with leads, vs. without? There must be some touch issues there also, especially with respect to = fast and hard playing. Wouldn't center of percussion move closer to = balance rail if springs replaced leads? How would that affect touch? Thoughts? -Mark ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/17/6a/3a/0a/attachment.htm ---------------------- multipart/alternative attachment--
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