<!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 6.00.2800.1479" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial size=2>Ron N said: "<FONT face="Times New = Roman" size=3>I wonder how much a part the PH of different wood species used in making = <BR>keys plays. Looking at a chart, zinc is right up there in reactivity with <BR>magnesium, and seems like a likely contaminate."<BR><BR>Ron N,</FONT></FONT></DIV> <DIV>Sounds more like what is really going on. Thanks to all for the = intraspect into this topic. No Matter, expanding leads or action brackets....all a = pain in the toosh!<G></DIV> <DIV>Best Regards,</DIV> <DIV><FONT face=Arial size=2>Joe Garrett, R.P.T.<BR>Captain, Tool Police<BR>Squares R I</FONT></DIV></BODY></HTML>