Ok so I recently bought an amazing set up. A KGo, and a bunch of cartomizers to go with it (because I wanted to try both the LR single coil and LR dual coils). The only issue that I have is that they vape really rough. The SR cartos that my kit came with aren't as rough, but I'm not getting much vapor production with them. I'm thinking that a different juice is the answer. Right now, all my juices are 70pg/30vg, 18mg nic. Would it help if I got a 60/40 blend? Do I need to drop the nicotine level?