MattH What do you mean by deep clean ?
Usually you would have access to both burrs, clean them all, clean the chute, clean the carrier, clean the chamber.
With the Niche the process is:
- remove screw and disk;
- remove adjust collar;
- remove top burr from spindle;
- remove lower burr and the sweeper;
- remove the springs.
Clean them all with a brush. vacuum the chamber and chute. Put it all back in reverse order.
Takes 15 minutes if you are meticulous and clumsy like me.