Please allow me to try again to soften out my previous mistake
If you look into the camcog - from (cars) RHS - you should be able to recognise the slot in both the cog and the axle, where the allen key fits.
These slots should of course coincide, making sure the key has not failed.
That will make sure your cam axle is set correct at timin index when you lock it using the index dovel.
Wish you luck, you certainly deserves it now