Finally got around to doing this.
Couple of points just for info.
Had to release overrider to get the spanners on.
The yoke would not slot back in as the bar shown above moves. Solved by taking the rubber? Endcap off the rack to allow slight movement to re position it.
Took about 30 mins to grind the yoke down using 1200grit oiled strip, using a drill as per pic.
Rather than drilling out the yoke, I used a pin from a cable wall clip, which is the right size & serrated.

[Linked Image]