I'm not so worried about it passing through. At the grind I have in mind. The stand out to me was about the coarse grind and extraction.
I have found this to be so. Finer grinds take much longer for the water to percolate through.
Been experimenting with blends - a bit of cafe brulee, bunch of dark/coarse, bit of espresso.
A smooth brew, never bitter. But so strong! Gotta treat this almost as an energy drink. Spike with milk, small portions and remember to drink water.
Have really reduced soda consumption. Better too-strong cafe than all the chemicals in soda.
AA