But I just can't seem to get any consistency out of my cartomizers. I've tried more than one juice & a couple different cartos w/similar results. The fill/prime goes fine & usually starts out vaping real nice, but after a tank or two it goes FLAT. Like vaping water. No burnt taste, no nothing...well maybe the slightest hint of flavor, but mostly BLECH! And I'm not getting bubbles out the cart holes unless I really suck HARD. Shouldn't I get bubbles w/a normal draw 80% of the time? I'm new at using cartomizers, but am quickly getting frustrated...any ideas?