For those interested, a discussion of the work-around for services is at:
http://www.newrailwaymodellers.co.uk/Forums/viewtopic.php?t=6045
The Potters Bar crash was also blamed on the points/switch.
rogerta : I would respectfully remind you that the 9/11 bombers also had a full "How To" on numerous US TV debates after the first failed attempt.
Regards