The problem I had with my Protank 2 is that the draw is very airy and not a very strong hit. I tried with both flavor wicks, 1 wick, and no flavor wicks. All with the same juice (50/50). My results are that it hits a lot nicer with no flavor wicks. The head is also a couple weeks old, but its always been a pretty light and airy vape. I'm using and Ego Twist battery. I do like the pro tank, but i don't get as nice of a draw as I do off CE4 clearomizers and DV BCC clearomizers.