I had a breakthrough with these gurgly coils. Seems the o-ring trick doesn't fix that. Closing the airhole, when filling, doesn't seem to do anything either.
What I did today is....
1. fill as usual - I did keep the air hole closed and kept the o-ring on
2. screw on the base
3. turn it right side up - probably have to clean out the drip tip end 1st
4. open up the air hole
5. attach to pv
6. puff
gurgle
7. turn pv, with atty attached, upside down
8. press the fire button and blow easily through the driptip making the vapor go through the air hole - I did this a couple of times until it
didn't sound so wet
9. turn the pv right side up and vape
vape
vape
away happily
(til the next time you have to fill)
You will have to do this every time you fill it, but so far, so good. And boy, when this thing is working, it is the best vape I've had!