so i vape the menthol from V2 and they say that you can use their clearomizer (holds .9ml) about 20 times. i am at about 10. when i get to about .5ml the otherwise light colored liquid starts to turn brown and loses much of its menthol flavor. is it overcooking it? does it do this because it is so little eliquid in there? i only vape about 1.5 of these clearomizers a day hence not moving up to a large tank of some sort.