I use the Xl vapor Zeus and bought some black large smileomizers and they don't seem to last more than a day. when i first put them on you can hear and fell the smileomizer working then after a day you cant hear it i make sure it is full, vapor still comes out but does not feel right and tastes a little off. I have usually bought the blue large ones but they were sold out. The blue ones always seemed to last a week before this issue. Does anyone have this issue also or have any ideas what might be wrong?