I've not used that juice control ring ever. Or the black afc ring.
Same here roxy. Never have used either the juice control or the air flow adjuster...just leave them in the box. I like the open airflow, actually less whooshing without it.
By the way, I got my wick channels cut out on the top shoulders of the YiLoong version and it works perfectly now. Before I was getting some restriction there that was cutting off the juice. Also I can lower the coil now. Very nice tape.
Vape