Kyocera Glass Sesame Grinder

Good quality

I wanted a sesame grinder with a ceramic grinder parts, with glass holder for the seeds, and this one works well. It arrived promptly and was well packaged. I'm very happy and recommend this grinder

Is there something I don't know?

The sesame seeds mush up in the grinding process and don't fall out easily at all. Should I be using a special sort of sesame seed??