<HTML> Brian, <BR>  <BLOCKQUOTE TYPE=CITE> <PRE>...has anyone else ever felt the pressure sensation that I was describing?</PRE> </BLOCKQUOTE> Yes, on loud Sohmers with agraffed bridges; these suffer from excessive friction across the bridge, too, but I haven't dared pounding too hard. They also give very clear difference tones :) These might account for some of the initial distortion mentioned previously in this thread, at least for unisons fairly distinct in pitch, and for intervals. <P>Clark</HTML>