Wicking issues were definitely the problem I was having a couple of weeks ago with ni200 & my Lemo2. I at first thought that there was no way this was the issue, that it had to be a problem with my coil or with the Lemo2's positive pin connection. After redoing
coils & even switching to my other Lemo2 I still had the same issue - not much vapor & the warmth of the vape would not go up even though I raised temp up over 500f.
Then focused on wick & used less cotton......same result. Next, I went in the opposite direction & used more cotton. Enough to where I was thinking "this has got to be too much". But to my surprise Lemo2 started to perform excellent.
@Vlad1, I use the same method you do on my Lemo. Make the cotton a little wider than coil so that it moves through coil but is snug. What I then changed was the length of the wicks. I started leaving them a little longer than top of chimney. Then fluffing really well & tucking down. I also make sure my juice channels are clear behind the cotton. Using MORE cotton has worked everytime on my Lemo2. Now, I am still having some issues if I use 80vg/20pg but anything 70vg/30pg or lower(which is pretty much all of my juices) everything is working great now.