<!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 5.50.4913.1100" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial size=2>Gee, Ron, I was going to say that it's = because of the lack of strings in the section under the strut causing a stiffness = near the break, but I don't know enough to use twenty dollar words like "impedance".  Guess I haven't been on the list long enough yet.  </FONT></DIV> <BLOCKQUOTE style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; = BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"><FONT face=Arial size=2></FONT><BR>It could be going from agraffes to = tuned duplexes. It could be that the<BR>overall assembly is too flexible and = the lack of string load at the strut<BR>lowers the impedance there too = much. String load does raise impedance.<BR>Maybe too few  ribs, and/or = not stiff enough. Is it the bridge that's<BR>causing the problem? How = could you tell one way or another?<BR><BR> <BR>Ron = N</BLOCKQUOTE></BODY></HTML>