Maybe it is because I ordered and used the prebuilt coils, but mine worked great out of the box, but the leaking is killing me. Once I got the thing feeding good, rarely a dry hit. I am not going to try and spell his name, but the owner of the shop that makes them, is a super nice and helpful guy. I can send you the emails he sent me with lots of videos and tips if you're interested. Just PM me your email (or anyone else who wants them). Might be tomorrow evening before I can send them, working day shift this weekend and go to bed early.
The diver in the BB works greats, but I must agree it seems like no matter what it will eventually leak or flood. I think the leaking has to be the most annoying because the liquid ends up behind the tank, and that makes it a pain in the ... to get out without using something to pull it out....
Really hoping for a rebuildable built specifically for the BB that doesn't have these issues. Honestly at this point I don't mind using the slotted cartos for the ease of use, can't beat hassle free, even if the flavor does get muted.

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, the bases cold be made to extend down to be even with the positive pin, where it would seal against the BB positive contact silicone ring. Could be sold with three different air holes drilled into the side, 1.25, 1.5, and 2mm for adjustable airflow preference. Just saying 