+1 for trying juice with much less VG, and for using non-Blu cartos.
Also, I'd add that my personal experience with trying some Blu cartos on my eGo has been that many stores have old, stale, somewhat dried-up cartos for sale, despite the seals on them. If you got some of those, you could be getting some burning in the carto, which is quite inflammatory to my airways.
Also, I'd add that my personal experience with trying some Blu cartos on my eGo has been that many stores have old, stale, somewhat dried-up cartos for sale, despite the seals on them. If you got some of those, you could be getting some burning in the carto, which is quite inflammatory to my airways.