Also check and clean the "chimney" on the coil head. A bit of left or right pressure will pop the "chimney" off the coil head for cleaning and will give access to the wicks. I will sometimes clean up the wicks by dabbing with a paper towel if there is an excessive amount of liquid. Also, make sure the coil head isn't loose. After putting the "chimney" back on give it a twist to the right while holding the base (or whatever its called) and make sure its nice and snug.
When I use 100% VG juices I go through an entire cleaning process daily because that VG gunks up everything pretty good. Also, the amount of gurgling you experience is very dependant on the tank you are using. For instance, my mini-Protank and Davide tanks never get that gurgling sound. No matter what juice I use in them, they simply don't flood. But my Smok Pyrex clearomizers and Smok RBC seem to flood daily, no matter what type of juice I use.