<!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 5.50.4134.600" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial size=2>List,</FONT></DIV> <DIV><FONT size=2>I have a customer with a 1921 Steinway Upright with = very slow hammer return, which I think was caused by a floor humidifier.  = I  heated the hammer butt centers with a hair dryer, which freed up = the hammers for about 1 hour. The questions is what do you think is the most = reliable way to free up sluggish hammers without replacing center pins = or parts?  Should I use silicone and naptha, alcohol and methanol or = install a Dammp-Chaser heater bar with a humidistat?</FONT></DIV> <DIV><FONT size=2></FONT> </DIV> <DIV><FONT size=2>Thanks,</FONT></DIV> <DIV><FONT size=2>Arthur</FONT></DIV> <DIV><FONT size=2></FONT> </DIV></BODY></HTML>