I'm still scratching my head on this one. But I can tell you that in the past couple days, I've had 4 attys stop working. I think one is really dead -- still have it set aside for further investigation. So, I have 2 sitting in a PGA bath right now. Anyways, I did some fussing about with dripping just a little, trying to work up to good vape production while being sure I wasn't flooding -- even blew one out and got almost no juice so I know it wasn't flooded. Switched to a freshly flushed (PGA) atty, and did the same thing, no dice. Then I blew it out, flushed it again with PGA, and used a different juice. Bang. It's working fine.
I find this very odd, because the juice I was having trouble with is I think my 3rd 30ml bottle, and I haven't had any issues with it before. Makes me wonder what's happening. Maybe there's something in the flavoring that just needs to get purged out, and I shouldn't vape it steady for 2 days. I'm not going to say what juice, because I consider this anomalous. I have some new attys coming, and I might see what happens if I dedicate one of them to this particular juice.
Anyways, I'm wondering what happens in your case if you flush your atty out with PGA or vodka, blow it out, and prime it with 3 drops, then do a few very shallow puffs to just burn off the alcohol, then drip 1 or 2 drops.