I cleaned the inside of my Kenmore Elite 12 c. Thermal Coffeemaker, as a small amount of coffee grounds had gotten into the water chamber and it was becoming a bit slimy. While doing this, little steel beads rolled out. I attempted to replace them. My coffeemaker still brews, but never produces more than about 2-3 cups, even though I fill the chamber with 10-12 cups. I'm sure it has to do with the way the beads are situated. What should I do. I love this coffeemaker.