<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; = charset=windows-1252"> <META content="MSHTML 6.00.2800.1400" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face="MS Sans Serif" size=2>Hi,</FONT></DIV> <DIV><FONT face="MS Sans Serif" size=2></FONT> </DIV> <DIV><FONT face="MS Sans Serif" size=2>I tune a 70's Yamaha U1. All = of the action screws are tarnishing. I have come across this kind of thing = before, but not as extensive Have any of you come across this before? Any = suggestions, firstly, why this is happening, and what I should/could do about it?</FONT></DIV> <DIV><FONT face="MS Sans Serif" size=2>Thanks.</FONT></DIV> <DIV><FONT face="MS Sans Serif" size=2></FONT> </DIV> <DIV><FONT face="MS Sans Serif" size=2>Paul = Tizzard</FONT></DIV></BODY></HTML>