so ive been using the T3 tanks off and on lately, but also still vape a lot on my volt carts...im just sorta waiting for one on my T3 atomizers to quit working. how long will it usually last before it needs replacing? I have 2 new spare atomizers and have not had to replace an atomizer yet (but im not a vapaholic so I don't use my t3 alot yet)...and when the atomizer does quit on me how will I know that its time to replace it? does it just go completely dead, or will I notice a big difference in its vaping performance or what? ive been using my T3's for weeks now off and on and all 5 still work just fine as far as I can tell...