This topic has been moved to BachFar Diesel/Electric (http://www.ngaugeforum.co.uk/SMFN/index.php?board=23.0) where there is already an existing thread.
http://www.ngaugeforum.co.uk/SMFN/index.php?topic=34597.msg430269#msg430269 (http://www.ngaugeforum.co.uk/SMFN/index.php?topic=34597.msg430269#msg430269)