Got 2 Merlin's 2 days ago from eciggity...one stainless and one black ....loving the tanks but my black one has a really loose juice flow control ...turns with little to no effort...the stainless one is perfect ....contacted eciggity and this what they told me
"Weare going to contact the manufacture if they can send us replacements for the loose AFC rings.It seems that this is a common issue for the Black Merlin. We will let you know once we are contacted back.
Did you mean juice flow control or air flow control? I haven't heard of any problems with the juice flow control unless I just missed it.