---------------------- multipart/alternative attachment Tom said: " Yes, these two pianos are definitely at the extreme ends of the humidity reactivity spectrum. Tuning pins are very tight in the block; I wouldn't use 3/0 pins without reaming first. But loose pins wouldn't make the pitch go sharp like that, so I will be checking block to plate fit and plate bolt tightness as others have mentioned. Since the tuning is so reactive, I will definitely be installing a DC system (which I very seldom do in this Pacific Coast town). I was wondering what could be going on with the soundboard itself that would cause the treble to move so much. But I guess that board/plate shifting would explain it better. Good idea about pieces of hardboard for moving the piano out from the wall. For a fussy customer, one could put some felt on the bottoms and raise the piano with a modified pry bar (Yat Lam Hong idea that Isaac had made and Joe Goss sold)." Tom, With a 75% humidity, I'd be wondering why the other piano DIDN'T react! I think the Knabe reacted as it should. I do a lot of Oregon Coastal pianos and about half of them needed Damp-Chasers plus Humidistats to get them to stabilize. The other half are in very modern homes that do not have temp/hum. problems. Regards, Joe Garrett, R.P.T. (Oregon) Captain, Tool Police Squares R I ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/9f/01/1b/78/attachment.htm ---------------------- multipart/alternative attachment--
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