Reddit reviews Tetrachloroethylene 120ml (4oz) High Purity Solvent

The wax is probably still good. If /u/ChickenPicture's suggestions don't work. I would probably work on getting all the wax to settle as much as you can to the bottom and let it harden. Then I would remove the top, dump the water, re-heat the wax on a stove in the globe (using a double boiler), pour out the wax (to reuse later). Clean the globe really good with distilled water and replace with distilled water + surfactant (liquid dish soap, sent free Dawn). The amount of surfactant controls the surface tension between the water and the wax, more surfactant the smaller the blobs. It also keeps the wax from sticking to the side of the globe. That's why it's important to start with a little surfactant so you can get a good coating on the sides. You can start with just distilled water and a little surfactant (5ml), heat the lamp up on the base and start adding surfactant 1-2 drops at a time (let it run for a bit between doses). My guess for that globe you would start with 5ml of surfactant and work your way up once it starts flowing to the desired effect.

The beauty of these lamps is you can do a little trial and error. I re-did my lamp like 3 times in a row till I got it flowing exactly the way I wanted. Another option would be to get a GooKit from Magma Tower and just restore the whole thing.

Also if you're feeling all mad scientist you could make you're own GooKit using just 3 parts candle wax and 1 part Tetrachloroethylene. Heat up the wax, pour in the tetrachloroethylene and mix for 5 minutes. I've yet to try this but I have all the ingredients. Just need to find a new lamp to restore using this formula.

Good luck!