Douglas W Kent , WA June 16, 2015 Upper rail guide wheels (all 4 sets) refused to stay on their axles Pulled dishwasher from its spot, unscrewed old rails, started installing new ones, started having problems with the old screws being weak (screw heads started popping off). Went to store, bought new screws, finished job. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes