For those that find a little hard to turn UFS to close or open liquid, you can put off the one of the 2 same o-rings that connector has. You may also see an improvement to your vape
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This last time I took my UFS apart for cleaning I made sure to lube the air control ring's threads and o-ring with vaseline. If you haven't already tried this I'd give it a shot. Mine turns very nicely now.

Amen to that, brother!!!I am not sure, possibly. But I did learn one thing, listen to the man who designs the mod - he does in fact know what he's talking about![]()