Greg C Lewisville , TX August 12, 2019 Appliance: Model SAMSUNG DMT400RHS/XAA Lower spray arm would not stay in during use I ordered the new arm and retainer. The parts came in just a few days, even with the cheapest shipping, and took about 2 minutes to swap out. For around $40, the problem was solved! Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes