How to achieve refined textures?

[@ckumar5972]

with my two of the units from the day 1 of purchase a black substance keeps falling down from grinder while in use. This is not stopping. What can i do? I can feel more substance presence in the unit when i try to shake it and i hear its sound.

[@100x100chef]

hello, please write to us at [e-mail] explaining what is happening to the grinder, if possible provide us with photos or videos to better understand the problem.