Based on the symptoms you noted, your gearcase has failed, and you
would need to replace it as the fix. The other posters who talk about
agitator dogs are referring to when an an auger doesn't index during
agitation; not all agitators have augers, and I doubt yours does. The
Design 2000 is the name of the very early direct drive machine that WP
produced. If you replace the gearcase, make sure you match the exact
part required, as your machine might require one of the uncommon non-
neutral drain gearcases that were used in early models. On the other
hand, your machine is old enough to prompt you just to purchase
another one.