I have only had problems since I bought these parts and installed them. Every day my Roomba 900 series breaks while cleaning and sends me a message to clean the garbage collectors. EVERYONE. DAY. I cleaned them, cleaned them, tried to put them back in the case - nothing helps. These parts are just inferior parts and I should have known better. The manufacturer parts that came with the machine were amazing and never gave me any problems. A strand of hair appears on them and they stop working. Thanks for all the filters and brushes, but the garbage extractors are total crap. Grrr.
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