<< Since the sounding board could raise the pitch that much, is this a good indication that it has not suffered terminal compression set? It would seem to me that the board would still have to have some life in it to do that. >> I would think that it is the board rather than the plate. When a string breaks in the treble, the adjacent strings of that note seem to always go sharp, and when the string is replace, they come right back down. Would one string missing allow the plate to relax?, and if so, only on the immediate area? Seems more likely that the soundboard would be doing the moving. Regards, Ed Foote RPT http://www.uk-piano.org/edfoote/index.html www.uk-piano.org/edfoote/well_tempered_piano.html
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