Spray arms
Glasses that come out cloudier than they went in
Grit on the plates, chalky film on the glassware. The jets in the spray arms are blocked with scale and food debris, so whole sections of the rack never get hit with water. The cycle sounds completely normal, which is why most people blame the detergent for months before calling anyone.
Cheap to check. We clear the arms and measure pressure before touching the pump.
