ZETEC timing gear fixing.

[snapper]

Certainly it is the low cost DIY approach i love about kit car builders.
A possible reason for little comment is that it is not contensious i.e a solution in a post.
For that thanks.
Some would leave it as Mr Ford intended and some would use the expensive option of getting woodruff keys cut in by someone like Scholar in Suffolk or Gosnays in Romford, so your solution fits neatly between.