<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; = charset=iso-8859-1"> <META content="MSHTML 5.50.4611.1300" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial size=2>    Dave, do the = center-pins seems like they have any type of corrosion on them. Sounds to me like there is = some kind of chemical reaction taking place here between the cloth and the = pins. Otherwise, I can't see how they would gradually start to seize up on a = regular basis.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV>Kevin E. Ramsey<BR><A href="mailto:ramsey@extremezone.com">ramsey@extremezone.com</A> </DIV> <BLOCKQUOTE dir=ltr style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; = BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt arial">----- Original Message ----- </DIV> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: = black"><B>From:</B> <A title=pdtek@home.com href="mailto:pdtek@home.com">Dave = Bunch</A> </DIV> <DIV style="FONT: 10pt arial"><B>To:</B> <A = title=pianotech@ptg.org href="mailto:pianotech@ptg.org">pianotech@ptg.org</A> </DIV> <DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, May 18, 2001 9:06 = AM</DIV> <DIV style="FONT: 10pt arial"><B>Subject:</B> Sangler & Sohne = Serial Seizing Centers</DIV> <DIV><BR></DIV> <DIV><FONT size=2>I service a three year old Sangler & Sohne in = a nursing home. Among its many problems is that as time passes, the centers = start seizing up a few at a time. I mean they will be fine when I am there = tuning an a month later five whippen centers will be so tight you can barely = move the flange by hand! Protek won't touch it. I have to repin them, check the = rest of them. Everything is fine then I get a call a couple months later and = there are several new ones. Is glue leaching through the bushings? Is there any = solution besides repining the whole action? They would hit the ceiling with = that suggestion. Anyone else seen this?</FONT></DIV> <DIV><FONT size=2></FONT> </DIV> <DIV><FONT size=2>Dave Bunch<FONT size=1></DIV> <P> </P></BLOCKQUOTE></FONT></FONT></BODY></HTML>