I know Ian. In Holland I can't get this "fixing kit" It's been taken out of service here.
Making them up out of metal is a good idea though. Never thought of that Easy enough to duplicate the plastic ones out of 1,5/2mm metal or alu sheet I guess. I'll discuss it with my m8. Tbh, I think it's even preferable over the fragile plastic ones. Maybe we can make a couple so I can offer them to someone else who'd need them.