anyone using OBS Crius can shed some light on how you refill without leaking? some step by step instruction is good ! Leaking is always between the airflow control ring and juice flow control ring.

I'm a happy user of Bellus and so far no leaking issues with it but this Crius really turn me upside down.

I have closed the juice channel and air vent then open up top fill ...

after top fill then wait before open juice channel then wait before open air vent

still will leak

All good now after follow your advise to use more cotton. Thanks bro !