Well, for some reason I believe the joystick that came on my Scramble is probably an original one.
I found a similar one. I found it in my 25 years old spares box

I disassembled it and I found similar parts. But unfortunately for me still the same '4 ways' guide pattern


I'm still wondering why so many holes on that part ?


I tried different ways to attach the microswitches...because maybe these numerous holes could allow various ways to attach the microswitches and so to allow them to be closer from the shaft? ... but no, only one way to attach them


I also use a dremel to shape a big square that should allow to register diagonals moves.... but it's still not working like that. The base of the shaft is not big enough to register 2 switches at the same time


So I really believe this joystick is an original Zaccaria one, but a 4 ways and only 4 ways!
Oh wait, something is confusing me

. On your site Paul, this picture ?
http://zzzaccaria.com/zzz/images/Projects/ScrambleRestoration/PV/DSCN5181.JPGUnder the control panel, your joystick is different... its base is a cercle, while mine is a square. And on the top/right of that picture you have the same joystick than mine, except the ring of the base of the stick ? And as far as I can see, your should be a working 8 ways?!. Interesting.