Well, the steering arms appear to be fine. I suspect it was some ham fistedness in fitting the cap.
Today's new issue encountered is electrical
Th car has a socket for an immobiliser or transponder of some sort. But no key for it. No problems to date, until I managed to set the alarm off. And it won't reset, without disconnecting the battery.
Loads of extra wiring. And a large short circuit in the the loom served by fuse 21.
I shall have to go in with my wire cutters.
Happily, though, it seems that my wiring repairs have resulted in better starting and running.