WTF am I doing wrong? I have been vaping for a bit over a month and have not smoked since the first week, however I am getting frustrated with one main aspect of it.  I have 3 set ups, 2 c-twists and a little 600 mah back up batt.  All three have kanger pro II tanks.

Here is my issue; I am burning atomizers in an average of 3 days.  I would understand if I only used one set up, but I switch out all day from one to another.  I keep my twists on 4.0 and have 2.5ohm atomizer heads in the kangers.  Burning through 1 a day seems a bit excessive.  Please help!  I am finally off 1.5 to 2 packs a day for 25 years, but this is getting to be a headache.