What is the most common problem with KitchenAid dishwashers?

What is the most common problem with KitchenAid dishwashers is not cleaning dishes well or leaving white film and food particles, followed by not draining. For KitchenAid models like KDTM604KPS, KDPM604KPS, and KDFE104HPS made by Whirlpool Corporation, top failure is spray arm clogged with food particles and hard water deposits that blocks water jets, or filter under lower rack clogged with food that needs monthly cleaning, causing dishes to come out dirty and with white chalky film due to mineral buildup, accounting for about 25 percent of service calls, fix by removing lower rack, twisting filter, rinsing under hot water, and cleaning spray arm holes with toothpick. Second most common is not draining and leaving standing water at bottom due to drain pump clogged with food and glass or failed drain pump at 20 to 40 dollars. Third is not drying dishes due to heating element failed at 30 to 60 dollars or rinse aid empty that prevents drying. Fourth is leaking water onto floor due to door gasket worn after 5 to 8 years or loose hose. Fifth is control panel not responding due to control board failure from power surge costing 150 to 300 dollars. Sixth is door latch failure at 20 to 35 dollars causing not starting. To prevent problems, clean filter monthly, scrape plates, use rinse aid, and run Affresh monthly.