Thanks for all the info in this
thread. I ordered a blue case a while back from FT on a whim "just in case". Now it comes in handy with the new DNA40

It looks really pretty!
I'm still waiting for a M10x0.5 tap for the varitube connector. Ordered some 14mm a while back, would love to sink it but that is going to be rather difficult. The 22mm varitube would really look perfect but anyways.
I soldered all wires now. It was easier than expected. I used 0.75mm² cross section multistrand wire which is slightly thinner than the recommended AWG18 but it's the maximum I was able to to fit in the DNA40 holes. It would be about AWG18.5. The supplied wires are theoretically fine, the ends are even tinned, but the power leads won't fit into the DNA40 board.
The soldering of the 510 center pin of the varitube is indeed finicky because the hole is way too small for AWG18. Now I have a big lump of solder there and probably not the best connection. It should be fine and it holds but it impedes the movement of the center pin a bit lol. I might desolder and drill out the center pin a bit to really stick the wire into it, and then solder it right.
Going to use the supplied buttons, going to glue them in with JB kwik weld. I certainly hope I won't screw THAT up...
I'll try to fix the screen with tape and the board with hotglue. What I'm not sure about is if I should use the supplied screen. Since the
dna screen is kind of recessed, is this neeed? I guess without the screen you'd have a gap where air could come out though. The cradle is nice but now way I'll be able to wait for a cradle

Also the results seem to vary. Hot glue it is.
Back to waiting on my tap... ohmmmmmmmm.