Hey guys, Ive been Vaping for a little over a week now. I have a Tabac Bottom Coil Clearomizer (It looks like a Kanger T3). Outside of the coil unit completely failing, how do you know when to replace the coils. I noticed today a distinct difference in the operation of the coil I am using. I have to draw harder and the vapor production, while still there, is significantly less. I also notice that the taste of my juice is different. What are some tell tale signs that the coil needs to be replaced.