Hey all my bvc 1.8 coils not lasting through more than 8 ml. Of e liquid. Using very light colored liquid at 50vg/50pg not vaping over 3.8 or tastes burnt. Battery is a spinner 2 clone. Not chain vaping. Using all airflow holes. I have bought 8 coils in the past 2 1/2 weeks! CAN ANYONE HELP?