<!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 6.00.2600.0" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV>Hi List</DIV> <DIV> </DIV> <DIV>Got a problem with growing leads in the keys of a Herburger = keyboard fitted to a Schimmel grand piano.</DIV> <DIV> </DIV> <DIV>Does anyone know how to arrest the growth problem ? Can drilling a = small hole in the middle of the lead help ? What is the major cause of this oxidisation ?</DIV> <DIV> </DIV> <DIV>Thanks</DIV> <DIV> </DIV> <DIV>Tony Caught</DIV> <DIV> </DIV></BODY></HTML>