<!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 6.00.2800.1141" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff><FONT face=arial,helvetica><FONT lang=0 style="BACKGROUND-COLOR: #ffffff" face=Arial color=#000000 = size=2 FAMILY="SANSSERIF"> <DIV><BR>Paul,<BR><BR>I think all "detective" methods are best used in combination. When trying to deduce blow from jack angle, there is a = little latitude in that there is a range in which it will still work pretty = well. Also, on well-used butts, there may be some cavitation just from compaction, = which will mean either a little more lost motion, or shortening the blow = slightly from its original design. Anyway, that's why I suggested combining it with = the amount of dip required for full function, before settling on a final blow distance.<BR><BR>Bob</FONT> </DIV> <DIV><FONT size=2></FONT> </DIV> <DIV><FONT size=2>Thank you!</FONT></DIV> <DIV><FONT size=2></FONT> </DIV> <DIV><FONT size=2>Paul C</FONT></FONT></DIV></BODY></HTML>