Hi Les I have a lot of experience with Petrofs and find them to be amoung the more weather sick instruments I run into. That said I have a few that are unbelievbly stable. One of these did exactly the same thing you describe below. Was really stable for several years and then suddenly it got horrible out of tune with no good explaination at hand. Its been fairly unstable since. No real performance changes otherwise that I can identify. Its almost like the darn thing decided to come out of hibernation or something... hehe. I never have figured it out. Only suggestions I can think of is a round of tightening all plate bolts etc, and perhaps a good inspection of case beams, glue joints and that sort of thing. Cheers RicB -------- The piano a 6'4" Petrof. I've tuned it for six years, and it has been very stable until today.... Humidity was between 36-40%. The piano was 6-15 cents flat in the bass, 24 cents right after the break, +or- a cent or two in the center, and up to 30 cents flat in the top. I've never had problems with this piano before. When we had our first little cold snap (ok, 50 degrees isn't really cold......) she says her heater was off for two days... She also has been a prissy little player, but recently has been playing pretty hard. I tend to pound things in pretty well, and my tunings are quite stable.. This thing has be really baffled. Any thoughts, les bartlett houston
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