Sounds like you've almost nailed it and congrats on your new setup.
Are you doing spaced or contact coils? I found when using 28g it wasn't as easy keeping the coil away from the deck. Ever since I started using tempered, wicking has become much easier. I can tighten and arrange my coil where I want it before I take my rod out, and stuff a good chunk of cotton in there without destroying my build, and that's with 30ga.
I haven't had to have my 510 PIN out so far it becomes almost unstable. But I do need to keep it real clean so it doesn't mess with resistance. I find not over juicing when wicking helps a lot too. And per the above recommendation, I wonder if Teflon tape would work and be easier to use over the Teflon wire?
@Phone Guy - I'm using the Vapor Flask with a legit dna 40 board. I only bought mine this year, I've had it a couple months maybe and love it. I've quickly become a fan boy too but didn't run into any of the issues that some have. Like the screen glitch or power jumps. It has been a huge learning curve with nickel and if I had to deal with some of those issues at the same time, I could see that being a real turnoff. But I would absolutely buy another dna 40 board without hesitation over the ones coming out of China. In fact, I so want another Flask. I'll get a second sometime here over the next few months.
I'm doing spaced coils and have been experimenting with width of spacing - I've found, or at least I'm suspicious that closer spacing with the coil compressed in toward the center of the deck is giving better results compared to a long wide spaced coil. Not having too much trouble keeping the coil up off the deck, just some gentle nudging, although even that messes with the shape a bit. I have some 28g tempered on the way, will probably grab some 30g too when I can find some. I do have some regular 30g but not even going to bother, it looks impossible.
I do have some teflon tape too but at the moment have got the screw to feel stable and appears to be a good connection... One peep out of it though and I'll test out the tape.