Several issues I see.
Just leave it all in NEW. No reason to move from NEW to STORED on the same drive - all you are doing is using CPU% and wearing the drive out faster by moving stuff around. You only move to STORED if you have drives outside of the box like to a NAS.
You have only allocated 3GB for NEW and 3GB for Stored. That will be deleting stuff pretty quickly depending on your other settings.
You can set Alerts to 1GB