I've been watching this thread for awhile. I received my first 5 E2 rev 3's last Tuesday and was dissapointed with what I assumed were wicking problems. I'm a chain vaper when I'm home and sitting in front of the computer so good 'wickage' is important.
This morning I used some folded up ptb from my cart days, cut it to a length where once inserted it was flush with the cup, filled the cart and have been a happy camper ever since. I am using the standard size 510 versions, not the XL's.
I haven't encountered any real problems with getting the filler rings reinserted and seated on the 2 E2's I've been using so far. In light of that I've been just popping the ring out each time I need to refill and using a much larger syringe to do the job. I could of course fill directly from the bottle but since I have the syringe ready at hand I use that for more of a 'precision' fill. The tiny syringe fill method in combination with the tiny fill ports was a major gripe for me.
FWIW I'm using 65/35 pg/vg
juice.
No new findings. I just wanted to confirm what the rest of you have been doing and thank you for the effort.