I'm sorry there are those that are still having issue with their Zenesis.

I don't know if any of this will help, it may have been already suggested but here are some things that really helped me with mine.
Used to get dry hits myself, I'd hold the mini upside down, let the juice drip from the wick and then get a few good vapes before I'd hit dry again. I fixed that issue, no more dry hits, just good stuff and I did NOTHING to my mini, I changed the way I was holding it.
Before I held my mini almost vertical while vaping it. Never held a cigarette that way but during my almost 2 years of vaping, I got into the habit of holding my devices up to my mouth like it was a microphone. After pondering what I could do different without tearing everything down again, I thought about how I could keep that wick wet.
I then had a ah ha moment with my mini Zenesis and thought, keeping the wick immersed in the liquid while vaping would surely end the dry hits and it did. No more dry hits and all I had to do was change me, change the way I held it.
Now, I hold my mini straight out in front of my face, horizontal, parallel to ground. The vent hold in the cap is in line with my wick and they face the floor too. This way, my wick is totally immersed in the eliquid when I'm vaping it and it's awesome now!
I love my mini so much now, I'm kicking myself for not getting the standard as well when I ordered.