dang that sucks man. Just keep trying on wattage mode, forget the other settings. Are your batteries in good shape? mine are not so i gotta pre heat for like 10 seconds and draw like im drinking a hot drink with a straw if that makes sense. I have the 4 hole too, at first i would plug 2 holes to get it working but once i slowed my draw down very slow i got visible vapor.I've been playing with mine for more than a week and just can't get any sort of cloud at all (as seen in the videos posted here). I'm using all the recommended settings, downloaded the specific DNA250c Splinter settings, etc. Unfortunately nothing seems to work for me, no matter the wattage, temperature, or material selected. I wonder if there is an issue with my heater. Even at 50w with preheat I can't make any sort of visible vapor. After reading through tens of pages in this thread I see recommendations from 20w to 60w. Unfortunately the Splinter seems extremely variable on a unit-to-unit basis. I keep hoping that after a couple more tries I'll nail it and get what all the hype is about (I can see that since I last posted, another user was able to dial in their settings) but unfortunately at this point I am very disappointed with the performance and am feeling very disheartened.