mk 1 top joint moulding required

Hi - I’ve just picked up a Strida Mk1off eBay. Its not in bad condition, and I would love to restore it. I also have 5 and just love the convenience on public transport. I am looking for the 3D CAD file if its available because I need the two to sections for the ball joint. I have the right hand side nearly complete - the top of the ball housing is broken away - a new set is definitely required.

Any one able to help ?