I got mine yesterday and maybe I got a dud but I'm not all that impressed. Everything is really thin giving it a cheap feel. It feels like what I would expect a clone to feel like. I'm not a fan of the glass either. It's very thin and the edges appear to be raw. Same with the extension glass. Temp control is a giant pain and been through 5 26awg 316L builds and haven't had any luck at all with a consistent vape in temp control. Seems even worse than the v4 in temp control.
This is very interesting exp. I forgot that right now is TC era. Anyone here try TC on kayfun Prime? Pls share your thought.
I'm not having any trouble with TC. Or at least the problem I did have was resolved by opening the juice flow

I'm using a 30 ga 316l 2.5 ID coil. I have an identical coil in my K5 and both are happily maintaining their temperature, though I've set the Prime 5 C higher than the K5.
@mrcrunch08, it doesn't strike me as thin or cheap. The metal's much like the K5. I did notice the raw edges of the glass, though.