<!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 6.00.2900.2668" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV>Hi George,</DIV> <DIV> </DIV> <DIV><FONT face=Arial size=2>Yes there is a little knocking on the ends, but I cannot get a good frame regulation on the balance rail (with the knocking action) AND no knocking at all on the front rail.</FONT></DIV> <DIV><FONT face=Arial size=2>Nevertheless, when I screw the 2 cheek blocks, there is no knocking at all.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Then, what should I do?</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Q.</FONT></DIV> <DIV><EM></EM> </DIV> <DIV><EM>George wrote:</EM></DIV> <DIV><EM>"Is there knocking between the front rail of the keyframe  and the keybed at <BR>the bass and treble ends? The front rail of the keyframe  should be perfectly <BR>mated to the keybed, no gaps."</EM><BR></DIV></BODY></HTML>