Someone just asked me if I've used the single coil adapter in my Indulgence X MT RTA. Well, I hadn't realized it had one, lol! But, that does explain the weird afc ring that had me scratching my head. However, based on the size of the airholes under the coils, I don't expect this tank could tootle anymore than I could fly like Superwoman.
However, I'm going to inspect this as soon as my new MTs get here, and I'll update. But, I think this would be better for someone who likes direct lung hits even though s/he might prefer single coil tanks.