I just tried a smaller coil with higher ohms using a 50/50 juice, and was a little better but still had a burnt taste after a few hits. Either the juice wells need to be larger or the juice holes, maybe both. Juice can not keep up wicking fast enough.
the first coil didnt have enough cotton in it and the restrictor closed off to much air with a 2ohm coil
I own 4 of these tanks I fill the juice cup itself with cotton but dont block the juice holes
I fill my coils with cotton to where they are full but not tight
right now Im running 2.5mm coil at 35 watts and it is .6ohms in one tank
Another has a 2.5mm coil at .9ohm coil at 25 watts
Another has a .3 ohm coil at 45 watts and have had it to 55 watts but was to warm for my taste
As for flavor these tanks set up right have more flavor than any other tanks I have
These are just my opinions and the ways I have mine set up
The only time I have burnt hits is when the juice wells have cotton packed to tight or to much cotton in the coils