I had the same problem with my
tank. It started flooding and from examination, I saw the same little spider web cracks around the screw hole. I think those come from removing and tightening the screw, not a
juice problem because it's just right there.
It was an easy fix though. I took one of the tiny little orings off one of my old drip tips. Pushed it up against the screw head and used it as a washer, sealed it right up and problem solved. Been using it this way for a couple of months now and still working great.