<!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 6.00.2900.2180" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial>Hi Jon,</FONT></DIV> <DIV><FONT face=Arial></FONT> </DIV> <DIV><FONT face=Arial>could you explain to those whose native language = is not english what KR is?</FONT></DIV> <DIV><FONT face=Arial></FONT> </DIV> <DIV><FONT face=Arial>Thanks,</FONT></DIV> <DIV><FONT face=Arial></FONT> </DIV> <DIV><FONT face=Arial>Quentin</FONT></DIV> <DIV><FONT face=Arial><EM></EM></FONT> </DIV> <DIV><FONT face=Arial><EM></EM></FONT> </DIV> <DIV><FONT face=Arial><EM></EM></FONT> </DIV> <DIV><FONT face=Arial><EM>Jon page wrote:</EM></FONT></DIV> <DIV><FONT face=Arial><EM></EM></FONT> </DIV> <DIV><FONT face=Arial><EM>Start with routine = measurements:<BR><BR>String height for each section<BR>Hammer center height on #'s 1 & = 88<BR><BR>(String height) - (hammer center height) = Bore Distance<BR><BR>This will let = you know if the hammers are too short.  Look at the string <BR>impressions = in the crown, are they fairly centered?<BR>Are the knuckles flattened = out?  Bolstering them will get your L/O closer.<BR><BR>Action spread should be = probably somewhere between 112.5 mm & 113.5 mm. <BR>Blow distance = 46mm. Key Dip 10mm.<BR><BR>  As Ric mentioned, bed the key frame. Recheck = action parameters.<BR><BR>Is there superfluous after touch now, because if it = is minimal then <BR>bringing the L/O up will decrease that.<BR>In other = words, if the jack is far away from the knuckle when the key is <BR>fully = depressed then there is<BR>tolerance for the L/O to raise. If the jack is in very close = proximity to <BR>the knuckle then you have to deal with<BR>action = measurements or KR.<BR><BR>Have you taken touchweight measurements?  If they are = low (light touch) I <BR>would suspect KR.<BR><BR>Best of Luck,<BR><BR>Regards,<BR><BR>Jon Page, piano technician<BR>Harwich Port, = Cape Cod, Mass.<BR>mailto:</EM><A href="mailto:jonpage@comcast.net"><EM>jonpage@comcast.net</EM></A><BR><= EM>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ <BR></DIV></EM></FONT></BODY></HTML>