Okay, got it sussed, if you look at this lush projects page
http://www.lushprojects.com/bongopartsm ... 2of02.html
I hope I can describe this properly, the bit of plastic that goes around the side (if you look at the cable of stalk 66-122B in the photo and follow the cable back the way, before the cable gets to 66-122, the bit of plastic that's showing at the side of the mechanism) has broken, so the little sliding bit which the broken bit of plastic sits over has no way of being cancelled. I'm going to try some superglue initially then probably hit the breakers.
Thanks for all your help, and if I need to replace the mechanism, might look at sourcing another leather steering wheel Donald
