I am useing a Megaladon with a J tank and boge 2.0 ohm carto. I have gotten 1 carto to wick properly then as soon as i refilled it, it stopped wicking correctly. All other cartos have not wicked properly and i have to drip after a few pulls. I am useing a 30% VG juice. I also fill as shown in the video from electronicstix. Any tips on getting this to work properly? Thanks