Normally I love to fiddle with stuff but for some reason the rba's just ...... me off. I think it was because I followed directions and was still having to tweak it, never got it quite right. I was expecting some mind blowing taste and vapor, instead I got muted flavor, dry hits, and minimal vapor.
It likely took me a couple-few months 'till I started getting it right. I'd fool with it one night, it would work, but wasn't better than a Vivi Nova or Fusion carto. I'd be happy when it was at least as 'good as'. Then I'd just ignore it for a few days to a week. Give it another try. Then oops I did something right and got a hint of what was possible. And so it went for a couple-few months. Now I can do a pretty good setup and I really enjoy it more than my other juice holders. I still don't get those steam locomotive billowing clouds of vapor like you see folks exhaling in the videos - but I can get a satisfying cloud at least as good as a good off-the-shelf atty/carto/CEx attachment.