[Marvin]

I've just got my MMM through the post (thanks George16) and I know mounting them is often a problem. I was thinking that, why don't you just remove the bottom of the case, drill 4 holes in the corners ~2.5mm and tap them with an M3 tap. You could use thin nuts to secure the screws as there is plenty of space inside. Then just screw it to wherever it needs to go with a bit of servo tape just in case. Don't know if this has been tried before, but I'd of thought that this would be the best way to mount it securely.