So I ordered the KR808 kit after reading that the voltage was a true 3.7 device, rather than the lower 3.1ish on the 510s. I also like the idea of an auto batt. But I'm having no luck getting any vapor out of this thing. I refilled some blank cartos with a strong VG juice and I get an ok TH, but the taste and vapor just aren't there like I was expecting. I also tried an adapter with the 808 batt to 510 atty/cart. It seems like the adapter keeps the atty from firing correctly - miniscule TH or vapor. Does anyone have any hints as to what I may be doing wrong or if I could try something differently? So many people seem to love the 808; I really wanted to.