I got a pack of the E2 cartos rated at 2.8 to 3.0 ohms. I am using it on my V3.1 at 6volts. It will hit nicely once then burn taste. I can drip some juice in there and it hits good again (of course). Without dripping into the carto i get a burnt taste Even after i hit it and let it sit for about 2 min it is still a burnt taste until i drip. Is this common? I seen the PTB mod for this... will this solve the problem. I love dripping and could probably use these as only a dripper but the whole reason i bought them was to have a nice carto....