My two v5's eventually arrived (from froginfog) and I've cleaned and rebuilt them.
My observations so far:
1. The posts came with screws installed initially (the push-pin posts were in the spares packet).
2. I built a dual 28awg 2.0Ohm coils (1 Ohm) combined
3. It was a bit tricky getting the wires through the post holes (threading them through and out the back) but was easier than the v4 in securing them as they once both coils are in position both can be tightened down.
4. I'm a bit worried about putting too much torque on the post threads as they seem a bit soft (maybe my imagination) - last thing I'd want is to strip the threads.
5. As with the v4, if you screw the tank base ring (the one with the o-ring) all the way down the AFC ring will partially (50%) cover the air holes. You have to not screw the base in all the way. I recommend setting the AFC ring to the desired position then screwing down the base to meet it. You need to hold onto the base when tightening the top tank ring so it doesn't move around.
6. Top filling - not too impressed, the first time I did it there was a lot of juice leaking out of the airholes. On a few further attempts with air holes closed it was better but still not perfect. My other grip is that I have to use a syringe with blunt needle in order to get juice in the tank which I didn't need to do on the v4.4. It is also difficult to know when the tank is full, the only way is to measure accurately or keep going till juice comes out the top holes and then clean up.
7. The top o-ring (for filling) needs a sharp instrument to remove.
8. The juice channels are shorter than the v4.4 which I think may be a good thing for wicking.
9. I am running this build at 28W so far and have given myself a 'head rush' from chain vaping it but so far no dry hits.
10. Getting the amount of cotton right and the ensuring there is no leaks by putting some cotton in the juice holes is tricky (as it always was - as it depends on the juice thinkness).
Overall I am very happy with the new v5 - it performs very well (living up to it's name!), in particular the wicking seems to be improved.
Pros:
1. Wicking / shorter juice channels
2. Posts with threading holes
Cons:
1. Top filling: o-ring hard to remove, leaks when filling, hard to see when full.
Some pics of the build:
