The middle dial is a bas***d I had a quick gander at the quide, went down to my car (20 floors ) spent 1/2 hour pissing about with it, couldnt get the heater matrix cable off (was baffled for 15 mins) so gave up and put it all back.

I re-looked at the guide again and now see how is done and will sart again at the weekend Theres not much room to get your fingers behind