If you're getting juice in your mouth I would assume it's because you're puffing too hard. It could also be because your coil head is not seated properly in the base. Unscrew the coil from the base and then screw it back in, tightly. Put the tank back together, remove drip tip, flip it over and then blow into the base to flush the column of any lingering juice that's stuck in there. Put it back on and vape away, being sure to draw slowly or it will flood again. For the flavor problem, I suggest you go with a 70/30 pg/vg mix as PG is the flavor carrier. Last, IMO the Davide tanks have the MOST airy draw of any I've tried so far so go with everyone else's suggestion here and only screw it in until it makes contact. Any further and you're going to constrict airflow. Hope this helps!