My Ithaka will start to gurgle and leak a little bit of juice from the center post very quickly. I can figure out the cause. My juice in 100%vg and the juice control is only about 1-2 turns open. Auto feeder on/off doesn't seem to change anything. I can always tap the juice out of the mouth piece but I want to stop it from doing this entirely. I have the same problem with my Hercules(Ithaka clone). I've tried what Bishopheals did with putting an o-ring in the ceramic but it didn't help. Any advise would be appreciated.