@The Professor It's quite simple. Just get drill with a small bit (start small, you can always go bigger) and drill as showed in the pics below. I only have 2 shoulders and a regular capsule.
I drilled an "air" hole in one of the shoulder capsules (don't mind the home made mouth tip, it helps keep the capsule tip much cooler), and I drilled 2 holes (one on each side) in the normal capsule.
The 2 holes are a "straight through" drilling. This works very well for me especially at high temps. It seems to cool it down a bit when your near 7 or 8.
Where to drill.
Shoulder capsule. 1 hole
Standard capsule. 2 holes straight through.
Also, this my sound ass backwords, but sometimes when I'm taking a draw and the vapor is warm, I'll draw really hard allowing the fresh air to come through the side chamber holes and combine with the air I'm inhaling through the INH05 and seems to cool the air down. The light will flash really bright for like 3 seconds and the oven is right back up to temperature.
I have been using the INH05 daily, trying to find that just right temperature and draw speed, with and without the "air" capsule. I've gotten it down pretty good to the point where I might compare it to the PnP in vapor temperature.
It is much more tolerable to me than the first time I used it.
I plan on doing a follow up review after I feel I've "mastered the temperatures, if the capsules like a tight-loose-or in between pack, draw speed, and the amount of air intake through the unit and capsules.
Hope this helps!