Hi Greg, >Is the Protek likely to do what the teflon would not? It certainly will, unless you are talking about liquid teflon, and I have no experience with that. I have had several pianos that I thought had bad agraffes because of this, it sure feels like metal to metal friction, but when I soaked the understring felt with protek, everything moved like butter. It wasn't the agraffe at all!. Protec doesn't seem to migrate, and I have never had problems with it "coming up the string". Let us know what works. Regards, Ed
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