I have been vapeing for 5 months starting with 510 and progressing to Ego tank system and love it, totally off fags. Problem leaking . After changing atteys, batteries cleaning, blowing etc I have found the only way I can manage is to remove the tank and vape directly from the attey when a leak occurs, I do this until it starts to dry and then reattach the tank, remembering to keep it over 1/2 full at all times.In this way I don"t waste juice. Hope this is helpful, I do think the manufacturers could solve this problem, lets hope they do so.