Oh wait a minute. Now that I'm home and read your thread again, i suddenly realized you are using a mech mod.
I suppose you are using it without a kick? I've never bought the x8, but if the carto it comes with is a dual coil, there may not be enough wattage to really power it up.
I'll suggest check the resistance of the carto. I only use cartos on my provari and it's always at >4.5 volts for a 1.5ohm dual coil.
On just carto, there is no problem with it but when i push in the carto for my first tank; no problem. I am using K100 mod.
My second tank, i dripped by the wall of x8, i can see the juices automatically flooded.
So each vape is full of juices