Subject #1, Vapefly Horus!

Block the top 4 air holes and it improves the atomizers performance. I blocked the top 4 then installed the coil (3.5mm I.D.) 1/4 to half above the posts.
A thin sheet material (mine from a gallon VG bottle) if cut to the right width slides into the airflow channel and stops at a ridge in the interior of the air flow channel. Something like 5 to 7mm tall and the top 4 holes will be blocked. Enjoy! ;0)

Any flavor contributions any of you may be able to post up?