<HTML>In a message dated 05/20/2002 9:57:21 PM Eastern Daylight Time, cmpiano@attbi.com writes: <BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">Pick the exposed wire at the agraffe or bridge end with a guitar pick and compare sound of the better ones and the bad ones.  Then add additional twists on the bad ones to see if it improves.  You did twist at installation, didn't you?  This may or  may not help, but it will tell you if it's the string.  I had a 7 ft grand with lousy new bass strings.  Putting three full turns on the bad one did wonders. Let us know .Carl Meyer  Assoc. PTG Santa Clara, California <A HREF="mailto:cmpiano@attbi.com">cmpiano@attbi.com</A> </BLOCKQUOTE> Carl, I did twist the strings during installation (one full twist),and the worst two strings are the unison strings of the same note.(bi-chord) I will try adding more twist Wensday,when I go back and pull the strings in for their service,and thanks much for your tip. Hazen Bannister</HTML>