I have 1 juice that I really love and it's 100% vg and very thick, last night I vaped nothing but it and when I woke up this morning I could still taste it a little bit in my lungs and they felt like they where kind of coated (if that makes any sense) I've noticed this before with 100% VG, I know the answer is to just go with a pg/vg mix but I really love that kona cream from COV maybe drop vodka or few drops of water to thin it out, but I'm not sure if its the VG or the thickness of it thats leaving that residue?