
two totally opposite opinion, and I totally understand why. Here is my experience. These two total opposite opinion because two different way of vaping.
If you like to suck it in your mouth, like smoking cig, then you inhale after finish sucking, then the stock MT3 on the ego is a little too airy. You might want to plug one hole.
If you like to suck it directly into your lung, one very long shot. Then you can blow it out after finish sucking, or you can swallow it all and press it in there for a while, then blow it out. This way, you need a lot of air flow when you suck. Then you will want to drill hole\s for more air vent.
But First, I would suggest you to use it as is before you do anything on it. On my experience, after I recoil/rewick it with 100% cotton ball, it's not airy anymore. Now, it's perfect as it is for sucking it into mouth then inhale as smoking cig (with new cotton ball wick).
Oh no!!!
Dear OP, before you take a drill to your T3, please vape it for awhile first!
Most people around here (myself including) PLUG one hole to combat the excessively airy draw those BCCs deliver...