<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content="text/html; charset=iso-8859-1" = http-equiv=Content-Type> <META content="MSHTML 5.00.2919.6307" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT size=2>    My experience has been that = usually a hammer traveling in an unstraight line is the result of a = flange/centerpin problem.</FONT></DIV> <DIV><FONT size=2>    Theoretically, if you have a = piano and all 88 hammers are traveling straight, you should be able to change the = hammers and/or the shanks without having to burn or travel = them.</FONT></DIV> <DIV><FONT size=2>    A common problem is that when the = manufacturer drills the birdseye, the drill bit tends to bend under the = torque and the hole is not perfectly straight.</FONT></DIV> <DIV><FONT size=2>    Many thanks to Ray Chandler and = his wonderful class on ABS styrene flanges.  I have saved myself = a lot of stress since then.  </FONT></DIV> <DIV> </DIV> <DIV><FONT size=2>Ron</FONT></DIV></BODY></HTML>