You may be sensitive to PG?? I can only vape 100% VG. The PG mixes make my throat dry and scratchy. I think that I am one of those people that are sensitive to PG. It is fine for me because I don't really care for that much of a throat hit anyway. If I want a throat it though, I crank up the voltage a bit. Besides, I love the thick vapor that the VG produces. Just my take...