<!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 6.00.2900.2912" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial size=2>I agree with Andrew - subjecting a fine instrument to wide humidity swings is abuse of the instrument. IMHO, it is unreasonable to expect any piano to perform well under these conditions. The remedy is to either install proper whole-room humidity control or a well-designed DC system.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Terry Farrell</FONT></DIV> <BLOCKQUOTE style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>RH greatly affects tuning pin torque.  50-60 % may read OK while 8% will read inadequate.  You may have to re-measure again in the dry season.  That is <B><I>way</I></B> to wide a swing.  This piano needs a cover and a DC Piano-Life-Saver-System under it.  That swing will destroy pinblocks, soundboard, bridges (bridge-pinning) etc.  There are daily (temperature related) swings that also affect the tuning.  The DC system will control those and allow the piano to be in a concert-quality tuning for more of the time.  If they won't keep a cover on it, get them to use an Edwards string-cover.  The wool will (on its own) help to contain humidity swings and with the DC system protect the entire piano, extending the conditioned environment into the action cavity.  Without this added protection you are facing an impossibility.  I suspect the numbers you have provided will negate any warranty.<BR><BR>Good luck,<BR>Andrew Anderson</BLOCKQUOTE></BODY></HTML>