Dave; You'll likely get many suggestions varying from cloth treatments to replacing parts. Try checking the tops of the jacks for any burrs in the contacting edges. Have some fine sandpaper to lightly sand the edges and graphite to lubricate. This may or may not be a cause. Good luck. Jim -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20110214/2b954843/attachment.htm>
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