---------------------- multipart/alternative attachment I recently re-flanged my U1 due to bobbling hammers caused by the silk thread which holds the hammer butt spring being broken on about half the flanges. Since that day, I have a new problem with the piano: the jack gets caught under the hammer butt on rapidly repeated notes and blocks the hammer to the strings. This happens on about 10 to 15 hammers in the middle of the keyboard. I checked the backchecks and the hammers are checking at 5/8". I checked the lost motion and there was enough to allow the hammers to move back with the hammer rail when pulled away from the strings. There is enough dip to allow the jack to letoff. The piano does get a lot of use; I teach 15 students/week on that piano. The piano is about 30 years old and these are the original butts. So I could imagine that the butts have finally worn to the point that there is a dent or something catching the jack under the butt. I thought the next thing I would try is to apply Teflon powder to the butts. (And remove one and take a good look at one...) But it seems unlikely that this problem didn't exist and then all of a sudden 15 of them all develop this problem at the same time. Am I missing something? Can anyone offer me some advice? Thanks PianoTunaGuy ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/db/21/01/ea/attachment.htm ---------------------- multipart/alternative attachment--
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