Hello, The issue you have is you can not get parts for that unit. Cuisinart does not sell all the internal parts for that unit like a Kitchenaid mixer. The best you could do is call Cuisinart to send it back. They are good about returns and will likely give you a free replacement minus shipping.
Cuisinart® Customer ServiceXXXXXEast Windsor NJ 08520 Any requests concerning product returns should be directed to customer service. 1-800-726-0190