I usually set up my trident clone with dual 30g kanthal 6 wrap 2mm folded silica. Comes out to 0.5-0.6 ohms, plumes of vapor. I make sure the coils are the same height of the air holes and make sure nothing is blocking. You should get a clear view of the coils through the air holes. There might be a problem with the airflow if it lacking vapor. Try setting it up with less wick. There really isn't much space to play around with. One last thing to check is to make sure that the top cap is not touching the coil wire when put on. That might be causing a short. Even with 0.5 ohms, it takes several pulls before it gets hot for me.