What should I do if there are spots and filming on glasses and flatware?

Use Jet-Dry® rinse agent to remove spots and prevent new film build-up. To remove stubborn spots and pre-existing film, remove all metal utensils, do not add detergent, select the longest cycle, allow it to run for 18 to 22 minutes, then pour 2 cups (500 ml) of white vinegar into the bottom and complete the cycle. (Page 12)