I have to keep the cleaning brush handy to clean out the chute, which spills more coffee

If you fill the tank with beans you can only grind about a third of the bean in the holder before you have to stop and use the brush to clean out the passage that the grinds come through.

If you are so punctilious you may actually enjoy the oft-repeated ritual of taking out the easily accessed top grinder allowing for brushing away the compacted powder and thrusting the excellent and handy brush downward to clear the tiny exit port