Does anyone have any experience or ideas on how to secure my joystick (the second one I've had) to an 18mm thick base?

It needs to be quite secure as the base needs to fold vertically to fit in a cupboard.

The msff2 has small self-tapping 10mm long screws around the base, but I can't find longer ones to fit through a base.

I've been using a large g-clamp for years but I'm rebuilding my setup :-)

Any thoughts appreciated.

56RAF_phoenix