it was all attached, just didn't hold the door open, so after a bit of research I guessed it
probably just needed a new spring.
Sadly, when I took it apart i found this:

Not what I was expecting!
It's been repaired before, and broken again.
Seems to be the same as an S1 Esprit , but where can I get one of these from?
The cranked arms seem to be available, but I can't seem to find the main body part.