Two front bottom rollers for the top rack were partly broken, and the rack kept coming off the rollers. George W. • Westminster:, MD • April 04, 2014 Appliance: Model ELECTROLUX MODEL FDB510LCS My Repair & Advice Unscrewed the old rollers one at a time, and screwed in the new ones. Couldn't have been simpler. Why did I put it off for so long? Was this review helpful to you?