Watched the vid.
First of all: THAT IS NOT A MINIPROTANK.
That's a protank type; not a mini.
A miniprotank is like having that evod you have there, but it's glass instead of plastic.
The difference: the protank uses a 510
thread which introduces all sorts of problems, whereas both the evod and the miniprotank use the big eGo
threads, and the airholes are obvious.
Now since you have both the protank and evod, you can swap around the coil between the two of them to check if the problem is with the coil.