<!doctype html public "-//W3C//DTD W3 HTML//EN"> <html><head><style type="text/css"></style><title>Instability puzzler</title></head><body> <blockquote type="cite" cite><font face="Arial" color="#000000">I regularly find myself having to retune the notes at the break on any brand of piano.  I have always felt that the gap for the plate strut leaves no strings and as such, there is unstable tension there.</font></blockquote> <div><font face="Arial" color="#000000"><br></font></div> <div><font face="Arial" color="#000000">Back when I was tuning full time, I found that Yamahas in particular were a problem</font></div> <div><font face="Arial" color="#000000">at the area. On a thread regrading that many years ago, I think it was Ron O who suggested it was probably due to the difference of % breaking strain across the strut.</font></div> <div><font face="Arial" color="#000000">A scaling problem basically.</font></div> <div><font face="Arial" color="#000000"><br></font></div> <div><font face="Arial" color="#000000">Also check to see if the bridge is notched to accommodate the plate strut and perhaps</font></div> <div><font face="Arial" color="#000000">it is binding on one side, slipping occasionally</font>. To remedy, a hack saw blade will ride the plate and excavate bridge material (I'm bold and use a reciprocal saw  :-).</div> <x-sigsep><pre>-- </pre></x-sigsep> <div><br> Regards,<br> <br> Jon Page</div> </body> </html>