Judging by the people that are affected and not affected, I think it'll be down to certain ingredients, in Glitchs case the chemist thinks it's the sweetness, but we'll see what happens when he mixes a non-sweet batch. It could be a combination of vaping style and ingredients. Obviously, we want to get to a point where any liquid is fine, and the oddity of the 0.42 coil being fine is being investigated as well... we will figure it out.
@Mitz I am off to the Paris expo for the weekend so will contact you on Monday and get a way forward for investigation started with you as well. @Glitchy if you can let me know how the unsweetened trial goes, if that confirms the sweetner is the issue, then I'll get Bryn to help with reducing the sweetener and maintaining taste.