Don, <<I suggest repairing the stripped bolts as you intend, and then adding a complete DC system *with* a plastic back cover.>> I usually install the system with the back cover--it just makes sense. <<How tight are the tuning pins? >> They are fine. <<In your case, the piano was still *catching up* to the higher humidity level so that is why you saw such a dramatic change.>> I believe that this piano was not stabilized in April when I last tuned it at 63% RH. But, I have no way of knowing these things, and they need the piano at standard pitch. I know that it is not my problem when the tuning goes out. They also know that, but it is indeed frustrating. (Not frustrating enough for a DC system, though. :-)) John Formsma Blue Mountain, MS mailto:jformsma@dixie-net.com
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