My first set up is a TKO Firefly with an iClear 16D clearomizer. At first I was loving it. Great vape, throat hit... ect. I changed the coil out, and now it's a bit weak. Even my boyfriend says it's not acting like it used to vape wise. My Apollo and Kanger combo is becoming my go to because now it vapes better and they were the same before the coil change. I'm just hoping to find out what the issue is. Does anyone have experience with TKO and their products? Thank you, guys.