well....some people are sensitive to the taste of polyfill in a cartomizer....your results can be a number of things, weather it's your use of generics or the fact that you're
vaping low voltage on a KR808.....if i'm not mistaken (and someone please correct me if i'm wrong here, i don't own this kit...) but the smokeless image VOLT uses KR808 (at least i think, i could be very wrong as previously stated, it could very well be 901 threading as well)....you can try some of their cartos if the threading is right...however, again, you may be sensitive to the taste of the polyfill inside cartomizers..
i will state that i love cartos, and vastly prefer them over other
juice delivery systems, but i've moved up to 510, where there are more options available...if you jump up to 510, i can highly recommend you go over to ikenvape and grab some of their cartos, as i've never once had issues with them, but that is another thread altogether....i will suggest however to go over to
madvapes.com...as they have a very wide selection of cartomizers that fit 808, including some smoke tech cartomizers, and from previous experience i can honestly say are good cartos (at least the 510s are, i can't see why these would not be though)
the only other thing that it could possibly be if you're getting tainted flavor after all this, is to jump over to a 510 connection and get some clearomizers to see if you get better results...either way, as always, YMMV, and good luck