<!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 6.00.2716.2200" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial>Recent discussions about this ...</FONT></DIV> <DIV><FONT face=Arial></FONT> </DIV> <DIV><FONT face=Arial>New questions: Is it's only function to indicate = that the pads are gunky? If pads are routinely replaced every 6 months, I ask: = "Who needs the SHB?" It adds about $22 to each system.</FONT></DIV> <DIV> </DIV> <DIV> <FONT face=Arial>Alan Barnard</FONT></DIV> <DIV> </DIV></BODY></HTML>