My ex-lady had an Ego One for a while, and she also experienced a fair bit of leaking. Or not so much leaking, but it's just like little dribbles (almost like condensation) coming from the atomizer. How leaky is yours? Is it consistently draining
tanks, or you're just noticing a little every now and again?
It's worth it to make sure the head is screwed down tight in the atomizer base. You don't want to "crank" anything to a breaking point, but just make sure everything's snugged up and there's no "play".