Fuller FD Keyboard internal PCB request

[ZX81Noob]

Does anyone know where I can get my hands on the Fuller FD Keyboard internal PCB extender which was made for the ZX81? If I have to get one built that's fair enough, but I'm just wondering if anyone already has a gerber file or the like? Or one already made up, I could purchase for a decent price? (UK Based)

I've already seen this thread - viewtopic.php?f=7&t=2448 - but the user @Tezz hasn't been on some years, and since I'm new, I can't send a DM as yet.

It's the second one in this Ad - http://www.zx81stuff.org.uk/zx81/hardwa ... 100042.jpg