Well, my delving into a Kayfun 4 was a bust, due to the original spring not playing well at all with my Hana DNA40, so I had to place it aside for the time being...

Thjat said, however, my Squape Reloaded's been runnin' like a champ! 5/32" contact coil at 0.12Ω, set such that the legs are at the bottom of the coil (coil being above the deck), wicked with rayon (of course!) on the standard deck. I've pushed ~125mL of
e-liquid through it with no issues. Some light crusting on the coil (easily cleaned off), wick is quite clean.
The best part is that I'm getting no leaks in my latest build, though my other builds would leak with the slightest overenthusiastic draw. What seems to work best for me (I live in WHYoming, at about 4500' elevation, which I think was part of my issues with wicking in my first few Squape R builds) is to set up a "two stage" wick. The "first stage" is full wick width into the juice channels to about halfway between the inner airflow chamber to the inside of the vertical juice channels. Then, at the top side of the wick, thin to somewhere between 15% and 20% of the wick's total diameter out and cut the rest off flat, perpendicular to the wick's direction of travel, then cut those the thinned tails off at the edge of the deck. When wetted, this allows the wicks to settle just slightly inside the outer edge of the vertical juice channels. Picture is while I was in the process of wiping down my coil (thus, the black flakes), and I've added some lines to clear up what I'm sure is a rather convoluted explanation, lol...
Probably a bit overly complex for what I want, but it seems to work well. The thinning is actually rather obvious in the pic, at least to me, as the tails are rather translucent. I hope if anyone else has had any issues with the Squape R, and other posts in the thread haven't helped much, this will. It's a great atomizer, and can indeed work well with rayon and/or Ni200 wire.
Yes, yes, I know, the DNA40's got its issues, but I'm lucky enough to have received one with none of them (as yet). To touch back on some of the older posts, I agree, the tech wasn't quite ready for prime time, but I personally think Evolvapor was trying to beat both the Chinese and the potential for overregulation from governmental organizations (presuming they'll grandfather the tech in) to the market with it. I do wish they'd have used some other wire, such as tungsten (which, to my knowledge, has even less potential for health issues due to oxidation than Ni200), but, well, the vaping market is already saturated with Ni200 wire used in NR-R-NR builds, so it made sense to use something people were both familiar with, and was in ready supply. Who knows, maybe someone will come up with a board that will use a different wire. That's for the future to decide, non?
Anyway, keep on vaping, everyone!
-Laters...!
kgs-wy