Echoing what everyone else above said. Adding that when you turn the tank upside down to fill it, don't flip it right side up until everything is tightened. The juice will leak into the coil area and end up coming out the airflow holes.
I'd take everything apart, take the coil out, rinse everything (except said coil) off well, and let it air dry. Had this problem, and this worked well for me - haven't had a leak issue since.