Lewis M Scottsdale , AZ October 08, 2019 Appliance: Model KUDR24SEW4 The upper supply arm had developed a small hole from years of pressure and detergent dishes seemed to not be getting as clean as when it was new. I replaced the upper supply arm and spray arm. It works great and now gets dishes cleaner (subjective judgement) but is definitely quieter! Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes