I finally got a solution for the missing Oddie fasteners. There is dutch company that still has some stock of the old wing style fastneres although they don't have the right length.
I bought a bunch of them and I could modify them to use them at the front bonnet and at the rear lid. I splitted the fasteners and tapped a thread on both ends (6mm). A threaded tube is used to lengthen the fastener. Fine adjustment is done by washers. Some rubber hose keeps the fastener in place when not locked.
I add some pictures below. Actually the front fasteners need to have a key operated lock. I bougth a lock fastenber from the same company and tried to modify it. Although it somehow worked out the key and the lock was too small and weak to operate the bigger Europa fastener. So I'm using the wing style fasteners at the front too.
That's where I bought the fasteners (18 € for ten of them, plus shipping):
https://www.materiaal.nl/phuni/page.php?pid=62910&ta=620&cc=6&kind=55Klaus