Thanks all for your input,
I have to admit to wimping out on removing the steering wheel!. I have removed the steering coloum to intermediate shaft UJ and thankfully that has a groved spline end rather than a single flat so it means I can set the steering wheel in the centre position using that, with fine adjustment being done on the steering rod length adjuster (ball joints).
While there, I also checked the cancelling of the indicators. It seems that both left and right indicators cancel when the steering wheel is 180 deg (6 O'clock) from straight ahead which seems starnge to me. I thought they should cancel at 10 and 2 o'clock positions. But I will just live with it got now.
Thanks
David