That's odd Redruth, I've just ordered Twist of the Wrist II and the MCN Circuit Guide by Andy Ibbott (Mr CSS) from Amazon. They're both available.
Here's a link to the circuit guide As it says, it can take 4-6 weeks delivery (mine did), and Il Duce, David Cook, reminded me that if I had bought both books directly from the CSS I could've got a DSC discount
The circuit guide is excellent though, really thorough guide to every corner of just about each track in the UK, including the minor ones and the IOM
[Edited on 3-8-2004 by Jools]