<HTML dir=ltr><HEAD></HEAD> <BODY> <DIV id=idOWAReplyText8810 dir=ltr> <DIV dir=ltr><FONT face="Times New Roman" color=#000000 size=3>Over= the winter break I have restrung the top two sections of 2 concert grand's= that were getting in the habit of breaking treble strings far to frequentl= y.  I've done this many times on the practice room pianos.  We've= discussed this before with regards to the uneven tension when two sections= are done and tension is left on the rest of the piano.  </FONT></DIV> <DIV dir=ltr> </DIV> <DIV dir=ltr>Just out of curiosity when I got the treble strings off, I m= easured the pitch of C5.  It was 76-cents sharp.  After I install= ed the new strings and put enough tension on each unison so it didn't sound= funky and enough to keep the coils tight I measured again and C5 was down = to just 16-cents sharp.  I then chipped twice and measured again = and C5 was down to just 4-cents sharp.  By the time I started to actua= lly "tune" it, C5 was just barely off.</DIV> <DIV dir=ltr> </DIV> <DIV dir=ltr>Since the sounding board could raise the pitch that much, is= this a good indication that it has not suffered terminal compression set?&= nbsp; It would seem to me that the board would still have to have some life= in it to do that.</DIV> <DIV dir=ltr> </DIV> <DIV dir=ltr>Ideas??</DIV> <DIV dir=ltr> </DIV> <DIV dir=ltr>dave</DIV> <DIV dir=ltr><FONT face="Times New Roman" color=#000000 size=3></FO= NT> </DIV></DIV> <DIV id=idSignature72296 dir=ltr> <DIV><FONT face=Arial color=#000000 size=2>__________________________= </FONT></DIV> <DIV><FONT face=Arial color=#000000 size=2>David M. Porritt, RPT<BR>M= eadows School of the Arts<BR>Southern Methodist University<BR>Dallas, TX 75= 275<BR><A href="mailto:dporritt@mail.smu.edu" target=_blank>dporritt@ma= il.smu.edu</A></FONT></DIV></DIV></BODY></HTML>