Replacing Fluid on a Liquid Wax Lamp

[Carl]

I have a Nordic MK2 with liquid wax.

The liquid wax just gathers at the top. It had a 30w bulb in so swapped it to a 25w and it still does the same.

The fluid with the liquid wax is cloudy so I wondered if anyone had any success in swapping the fluid out and leaving the wax? I fancied trying to save it before I resorted to pouring the lot out and refilling with the contents of a new Astro Baby bottle.