i've gone through all my carts, and have been having issues...none of them are vaping. the battery is charged, the carts are fairly new (with a week old) the led lights up...i've cleaned it...but i'm not gettin as much a vapor as i did a few days ago. not getting the throat hit, the vapors...nothing! and i'm in the middle of quiting, so stress level is going up!!! i have a kr808 shorty from V4L. please HELP!!!!