Done

SWMBO hasn't been feeling great again today ..... damned weather.... so I have played about with bits of wood during which I lost 2 hex screws for holding jaws on the lathe (a bit essential really) and no amount of sweeping, clearing up the area and checking everything with a strong magnet found them,
Luckily I have a few with the right thread. Unfortunately the head diameter is slightly too big for the recessed hole.
Luckily I have a grinding wheel and some files.