I JUST posed on another blog... (can search for my last one). Upshot: for me the chemical fruit and coffee crap Chinese
juice tore up my sinuses and throat--I blamed "my body is changing". Went to Johnson Creek and my problems stopped in an hour. So just a FYI not all people react the same to flavors/chemicals and not all your body is changing is neccessarily true. If the PG/VG ratio doesn't help, may want to try other
juice vendors till you get some that agrees with you. I also suggest that you may want to give your body time to adjust and -- not sure if you are but for others -- not pound tons of new flavors till you adjust to
vaping a bit. I'm doing DIY with Capellas cause they are less chemically which works for me; a TPA sample I tried seem horrible to my sinuses. Not all juices are right for everyone--get one that's right for you. An 80/20 PG/VG ratio that I make with Capella flavors is NOT the same as some 80/20 ratio sent to me in a V4L cool cart with Chinese juice.