Kanger Protank

[Sunger]

I recently got a hold of a evod head. What my question is, if i hand tighten the protank to my sigelei zmax, there is absolutely no air flow. But if I loosen it up a bit, I begin to get airflow.

Is this common?

Btw, when I used the kanger protank specific replacement heads, no problems.

 

[tmcase]

I have had this problem using the Protank on several of my mods. The use of this Tank Airflow Controller will eliminate that problem.