<!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=Georgia size=2>It would seem to be mechanical in = that it is not patterned around the harmonics of B5. I would think that the board has = lost it's crown or the lack of strong downbearing in that section is allowing the = bridge to move freely. Are the bridge screws tight?</FONT></DIV> <DIV><FONT face=Georgia size=2>If you push down on the board in that = area, what is the resistance? You could guess at the = stiffness/impedance.</FONT></DIV> <DIV><FONT face=Georgia size=2></FONT> </DIV> <DIV><FONT face=Georgia size=2>Another shot in the dark would be to = try mass loading! to change the impedance. Where's Ron's famous 50 gram = pre-drilled weight that he carried with him. </FONT></DIV> <DIV><FONT face=Georgia size=2></FONT> </DIV> <DIV><FONT face=Georgia size=2>Under the weather I = guess.</FONT></DIV> <DIV><FONT face=Georgia size=2></FONT> </DIV> <DIV><FONT face=Georgia size=2>Keith = Roberts</FONT></DIV></BODY></HTML>