You can try closing the airflow waay down, which will help create more vacuum to pull the thick juice better, but here's a simple 6 step method to make it work.
1) Go to B&M or log in to your favorite supplier website.
2) Purchase/order a Lemo, kanthal, and sterile cotton balls.
3) Look up "lemo coil build" on youtube.
4) Follow directions in the video to build, install, and wick a coil.
5) Fill, vape, enjoy, and get better flavor than you knew existed.
6) Place clearomizer in conveniently located trash receptacle.
Kidding. But in all seriousness, clearos don't do well with high wattage or thick juice. The experience is about a million times better with a rebuildable tank, and they're pretty easy to learn to use. It might be worth trying one to see if you like it.