So i just received a subtank mini from mvs and so far i cannot get it to wick any juice into the heads, ive tried the two it came with plus another 1.2 ohm i bought separately. I took everything apart and cleaned them and put everything back together twice now. Even if i put the airflow to closed and pull it doesnt seem to pull in any juice and i almost never see a bubble come from them. Any idea why this might be? ive heard of leaky tanks but this one just refuses to wick juice at all.