Hello, I bought an eGo-V from Vapor Labs quite a few months ago and I haven't had much so luck so far in getting a good flavor; the first one I got turned brown and started tasting awful so I tried another from villain vapors (pair of deuces 24mg), I got through half a tank on a freshly primed cartomizer and it started tasting like plastic. I asked a guy at a different store if it could be because of the high nicotine content and he said that was probably it, so I bought a similar flavor of their own blend, but with a 12mg dose of nicotine. I'm halfway through the first tank of that and I'm getting the plastic flavor again. If I ignore the device for a while and come back to it the first puff will taste good, but every subsequent puff will get that same flavor. Am I doing something wrong or do I possibly have a bad device? I'm trying to quit smoking (1/2 pack-whole pack a day) so I really want to make this thing work.