Synic: 1.4Ohm with a mechanical mod u will need a very good feed. Pls try a triple wick in your resistance.
Also sorry to write this again but check that Divers hole make a triangle with ceramic slots.
Apocalypse: an overfilling tank probably create this issue because there is no air on it to help the feeding.
Do u still have the same problem while the tank empty a bit?
It seems to be working great now that i have stopped filling the tanks to the very top. It was exactly that problem that you mentioned. There has to be a gap to help feed the wick