Ok easy question for ELA owners. I've been using mine for a while now. (really don't know how long, but not near as long as some).
Had my original KFL first version, on top. Been vaping for a couple of days. Took the battery out, and much to my surprise

I had an ELA full of e-juice. First thought was the KFL was leaking. Nope not even a small seep. Smelled the juice. Not even what was in the KFL. WTH!!!!!!!!!!!
Checked top cap and everything. Dry as a bone. Just inside the battery tube. The entire thing had juice in it. The Kick 2, tube, bottom button. Yea it cleaned up all right. But where in the heck did this juice come from.
I usually carry the ELA along with another mod, in the same pouch of my tac pants. (fits 2 perfectly). The other mod showed no signs of leakage.
Maybe it was a note to tell me to clean the ELA. Guess I'll never know.
