<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; = charset=us-ascii"> <TITLE>Message</TITLE> <META content="MSHTML 6.00.2900.2802" name=GENERATOR></HEAD> <BODY> <DIV><SPAN class=709160021-15012006><FONT color=#000080>Aaron</FONT></SPAN></DIV> <DIV><SPAN class=709160021-15012006><FONT color=#000080></FONT></SPAN> </DIV> <DIV><SPAN class=709160021-15012006><FONT color=#000080>I agree with = others regarding the jack clearance causing the hammer bobbling.  Very = likely the hammer butts have become worn, which causes a harder letoff resistance, = plus there is perhaps not enough aftertouch (i.e., jack clearance).  = Firmer flange pinning can reduce the hammer bobbling, but it might just be = hiding the real problem.</FONT></SPAN></DIV> <DIV><SPAN class=709160021-15012006><FONT color=#000080></FONT></SPAN> </DIV> <DIV><SPAN class=709160021-15012006><FONT color=#000080>As for the = stickers, I only repaired this on one piano, and it was a long time ago, by the key = / capstan / flange center line was way off.  I have observed the = problem on 2 other M&H 50s from that era, so I suspect it is in all of them.</FONT></SPAN></DIV> <DIV><SPAN class=709160021-15012006><FONT color=#000080></FONT></SPAN> </DIV> <DIV><SPAN class=709160021-15012006><FONT color=#000080>The problem = is that the sticker cloth is sliding forward very badly on the capstan during = play.  On the one I repaired it was observable by eye, and the wear on the sticker = cloth was a long mark instead of a round dimple.</FONT></SPAN></DIV> <DIV><SPAN class=709160021-15012006><FONT color=#000080></FONT></SPAN> </DIV> <DIV><SPAN class=709160021-15012006><FONT color=#000080>The repair = is to move the tongue flange rail up.  The corrects the sticker movement to = match the capstan, and the friction level goes way down.</FONT></SPAN></DIV> <DIV><SPAN class=709160021-15012006><FONT color=#000080></FONT></SPAN> </DIV> <DIV><SPAN class=709160021-15012006><FONT color=#000080>I did not = make any notes to myself as to how much I moved the rail, though.  I think it was = about 8mm up, but it was a long time ago.  I'm afraid you will have to = experiment a bit and observe carefully, both to be sure this piano has the same = problem, and to be sure you raise the rail the correct = amount.</FONT></SPAN></DIV> <DIV><SPAN class=709160021-15012006><FONT color=#000080></FONT></SPAN> </DIV> <DIV><SPAN class=709160021-15012006><FONT color=#000080>Good luck!</FONT></SPAN></DIV> <DIV><SPAN class=709160021-15012006><FONT color=#000080></FONT></SPAN> </DIV> <DIV><SPAN class=709160021-15012006><FONT color=#000080>Don Mannino</FONT></SPAN></DIV> <DIV><SPAN class=709160021-15012006><FONT color=#000080></FONT></SPAN> </DIV> <BLOCKQUOTE style="MARGIN-RIGHT: 0px"> <DIV></DIV> <DIV class=OutlookMessageHeader lang=en-us dir=ltr = align=left><FONT face=Tahoma size=2>-----Original Message-----<BR><B>From:</B> caut-bounces@ptg.org [mailto:caut-bounces@ptg.org] <B>On Behalf Of = </B>Aaron Bousel<BR><B>Sent:</B> Sunday, January 15, 2006 8:34 AM<BR><B>To:</B> = College and University Technicians<BR><B>Subject:</B> RE: [CAUT] M & H = model 50<BR><BR></FONT></DIV>It has stickers. I don't have it in front of = me, but my memory is that they are different looking from the typical old upright = stickers. I'd guess that they are maybe around 4" high. Please tell me = more about this fix. = <BR><BR>Thanks,<BR>Aaron<BR><BR></BLOCKQUOTE></BODY></HTML>