>And once installed, I can see discrepancies in those >springs which I couldn't see when the rail was out. When the rail is out, adjust the tension on the springs calibrating with a Correx gage or digital scale. Renner USA has a gram gradient scale in their back action kit pamphlet. -- Regards, Jon Page -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20071001/37e85aed/attachment.html
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