From your description I equally understand the following:
- the RBA plus (the new version using the screw to keep the "cylinder" in place) won't work on other tanks but only on your Subtank mini;
- you won't be using your Subtank Mini with the OCC coils that come from Kanger.
Am I correct or not?
Now I'm grateful to my Literature and foreign languages teachers who kept asking us "What did the author want to say?!?" when we were all 'Why do you ask US?! Ask HIM!!!!"...
Not mocking you, my friend, but unfortunately your choice of words doesn't make things comprehensible - at least to me. Many thanks for your efforts in trying to make yourself understood!