Good Sunday everyone, I've been using juice from Halo , Menthol Ice, Truepure, without any problems. I expanded to Mom & Pops Vapor shop and tried Pchela's Famous Five Layer and from Halo again Cafe Mocha & Twisted Jasva. Could these new juices cause some ( sorry to get graphic ) minor canker on my tongue. (painfull). I've been reading here that some juices can cause irritation. Acidity? Im not sure but never had problems until switching and trying these new flavors. Maybe the PG-VG mixtures were different? I'm talking too much, any ideas?