Thanks @SessionDrummer, in my haste to experiment I totally forgot to take any photos along the way. Condensation covered is better than nothing.
For it’s flaws it’s still great. It’s replaced a couple single coilers on my shelf for now, just as a smaller dual coiler.
As I look at my shelf I have one single RTA left in rotation. Everything else is an RDTA or a squonked RDA. So it does seem that I have a type…
But I’m also split pretty evenly between Yihi/DNA mods and mechs so who knows 