Bob, it sounds like the spring material has experienced corrosive effects -- not moth damage to the loops. Although San Berdoo is inland, could the piano have been nearer the ocean during a portion of its life? Either that, or desert rats from Sidewinder road have "lubricated" the springs. Either way, sounds like the spring cords are being "sawed" in half. You can get "silk" cord from the supply houses. Or, if the butts are the type with butt plates, you may just want to buy replacement flanges (with the cords) from Yomama or Schaff. It might be less labor intensive. Either way, try to identify/eliminate the cause while working on the effect. Jim Harvey RPT ______________________________ Reply Separator _________________________________ I've got a Yamaha console (about 13 yrs. old) that has suddenly developed a problem with the loops, which hold the hammer return springs, starting to break. (Schwander style, you know). Why would these be breaking? I'm wondering if the material of the loops is not treated with moth repellant, and if so may have been weakened by little critters? Would some type of corrosion on the springs have begun to act as an abrasive? By the way, what material should I replace these with? I've used dental floss for repairs, but I'm sure that's not the appropriate material (actually I'm not sure, but I'm guessing). But first I want to have at least a theory of what has caused the problem so it doesn't come back as soon as I'm done.
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