Take a look if you haven't already...even better....write one up yourselves
Chas'
http://www.ukgser.com/forums/showthread.php?t=186349
Wully's
http://www.ukgser.com/forums/showthread.php?t=185606
Big Dave's
http://www.ukgser.com/forums/showthread.php?t=185815
Chas'
http://www.ukgser.com/forums/showthread.php?t=186349
Wully's
http://www.ukgser.com/forums/showthread.php?t=185606
Big Dave's
http://www.ukgser.com/forums/showthread.php?t=185815