Yup all VG here and have been for a long time, PG makes me itch cant deal with it, but I have no issues with burning Atty's with my juice or carto's and love my DIY mixes nice and thick. Lately I've been using the high concentrate flavorings and really enjoy working with these more, takes less flavoring to achieve my desired results and my juice has a nice thick viscosity to it the way I like it. I only use Atomizer for the most part, modding my LR Attys with 316L SS Wool type mesh and they kick like mules. @ yanivriz seems like your not using enough juice maybe in your Attys and as I said on the first post with Carto's you need to fill them and let them sit for a while and fill some more until the entire internals are completely wet, otherwise if the filler gets burnt it's always gonna taste bad, same with Atty's in a way, make sure there wet and pump up the voltage a bit more maybe.
I agree with Hoosier not all VG is the same, I got 2 Gallons of the proctor Gamble myself and its good stuff, so are a few others. I never add water to my mixes though, I dont see a reason to do so using Attys and with the Alcohol base flavorings it cuts it enough, even with non alcohol based flavorings I'm good and have no burning.
yanivriz it's super your DIY'ing, it's the way to Roll, I'm sure you will get the wicking issue corrected, One thing is with CE2 type Cartos I can see how you may have your issue, have you tried the Stardust type CE Cartos too ? they seem to wick pretty good where the older CE2's always worked better with lower voltages these wick and you can crank em up like your Vivi Nova, and with that 510 Atty try a bigger Mah Batt with PWM like an Ego or Ego Twist, as well as a VV or VW Mod, I think this will give you a better vape than the little 240MaH batt your using for sure