<!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 5.50.4134.100" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial size=2>Friends:</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Has anyone else come to a case of = ivoritis on a non-Yamaha piano?  Classic signs -- white keys turning greyish, but = it doesn't feel sticky the way most grunges would.  Non-abrasives will = not remove the stuff.  The piano in question is a Boston 218 = (pretty big).</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Any brilliant ideas?</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Thanks in advance --</FONT></DIV> <DIV><FONT face=Arial size=2>Z! Reinhardt  RPT<BR>Ann = Arbor  MI<BR></FONT></DIV></BODY></HTML>