OK here it goes, I have a Kanger sub tank mini. I vape 3mg nicotine and some juices not all have a harsh throat burn. I always vape max VG so it really cant be a PG issue. Why do some max VG juices burn and some are smooth as silk ? For example....... anything by Ruthless is fine, also Propaganda is fine. Parrot burns, Space Jam burns. These are just a few examples. Oh and I use a .05 Ohm coil.