Hah, love your disclaimer. I think I'll just leave my Provari Chinese free lol. I only own one 18650 battery and a ton of 18350s anyhow. Though I should pick up a 490, I've had a Crown sitting around doing nothing for 2 months that I want to try in my Natural.
Heh. Yeah, I just don't want anyone claiming that I inspired them to wreck their threading.
For me, The Natural's 18650 tube is a temporary solution until I find a Hippo/Twins set available....but I've got it on there right now with an 18650 in my mini without any issues.
I also just saw that The Tatroe rings are being sold individually, so either 1 plus the extension, or 2 plus the standard end cap will allow for 18650 use in the Mini.
Edit: OT, but let me know how the Crown works out for you. I've got a Kick and I think it's great, but the Crown looks interesting and more convenient.