LW12 won't switch off with momentary switch

[nbr_uk]

As per title - I've installed an LW 12 and it won't switch off using a momentary switch. It switches off fine when sending the x10 commands from a remote, and switches on fine using the momentary switch but just won't turn off again.

I think I have it wired correctly - the k contact is wired to the "push to make" pin on the switch.

Any suggestions?

[nbr_uk]

Now RESOLVED

I've resolved this now - for some reason the module won't respond to the off signal from the momentary switch if the brightness is on full. If it's just one shade below it's fine. It remembers it's dimmer setting and the difference is only slight between the 2 levels so I'm using it slightly dimmed.