I have been using Ego 1350Mah batteries with Mini Vivi Novas with 2.5 Ohm wicks.For the first month and a half I was pretty happy with this setup.I found they were easy to clean fill and vape. Then all of a sudden I started to get dry hits and burnt coils.My juice is the same as the day I started and I still have a couple of my less favourite flavours that I started with and retried those and the same problem persists.I have tried removing the fiber piece around the coils and cleaned the tanks thoroughly with vodka overnight.I will get about 4 nice vapes and then a burnt hit.I have tried a couple of draws without firing the coil,then take a vape and that is a little better but still not great.Fuly charged batteries and using them near the end of the day both produce the same annoying results.Seems to be a wicking issue and I tried adding a couple of drops of vodka to my juice(rationalized this by the fact that the juice I purchace has a disclaimer thet there is alcohol in the juice,pobably to keep the coil clean ) before filling the tanks and that seemed to help a little but it still isnt what I started with.Am I missing something?Got fed up and ordered a Vamo and some different tanks but I dont expect to see them for a week or so.Any suggestions????????