My cartos finally arrived but I don't see any fill holes in the gasket so I just pulled the gasket out to fill . I did see what looked like fill holes in the small cap over the coils if that is what they are . Just vaped about 1/4 of the juice in no time at all so I can see them using a lot of juice but I have lots . Maybe ok for a different vape but I can't see them as an every day vape . It is a good vape though so far tons of vapor with an 80/20 PG/VG peanut butter juice .