I got this phiniac tank, I love it. I've been using the smok DC LR cartos that have 1 pre-punched hole. I find that I have to prime it from time to time. I was just wondering how others are punching their carts for these. I did try just making the one hole bigger, it was okay. Then I tried 2 at the bottom and one mid-range, it started flooding after a few hours. I guess I'm just interested in what others have had success with.