I just got some eGo mega cartos to go on my buzz. I filled until it dripped out the bottom slightly, blew it out, wiped it off, and attached. I have the buzz set to around 4.5V. At first it was great flavor and vapor, but then it started having a slightly bad taste, somewhat like burning polyfill on a normal cart, but not quite. I'm thinking the voltage might be too high, and the wicking can't keep up. Anyone else use eGo cartos on a VV and have a good setting? I'm using 50/50 blend juice.