Hi all, thank you for all your replies. I have pretty much got it all sorted now. Ive put it down to a combinantion of three factors, the effects of quitting smoking, humidity and high pg. Im living in a country that gets very humid, up to 90% humidity some days! On a really humid day even 80vg/20pg will give me mild problems, where as on a lower humidity day ill be able to handle 60vg/40pg with out too much of a problem. 100vg has been close to my cure, i think within a few more weeks and once all the analog toxins have left my body ill be back to normal Oh, and found mango was one flavour that didnt agree with me. Thank you for all of your help!