With a bit of trial and error i got my stone 3 to work well. I had tons of gurgle and spit but might have been the coil breaking in. After i drank a tank and adjusted the nipple to just see the slightest bit if a gap above the wick it has been working nearly flawlessly both tanks i have two with more on the way.
I do set it done on the side not leaks but if i don't or i chain vape it will dry hit..solved and the usual two seond upside down trick.
So it might be just the new coil or you need to adjust the nipple,to the juice thicker juice more gap around the wick less for a thinner juice. I use the gap and how much nipple is abovethe top of the tanks to judge my next "setting" it becomes easy to do with a couple of trys.
Hope it work because it provides great flavor, th and vapor when it "adjusted". Plus since it is CE2 you get the warmer vapor and massive th at a lower voltage. YMMV.
Mine works so smoothly that sometimes i am afraid it is going to be a dry hit as it is soooo quiet and smooth drawing.
Arthur