Instruct: Classify Amazon reviews into positive or negative sentiment
Query: One minor problem

I have owned two similar Krups Espresso machines (Model 871). They make great espresso and are easy to use. Both died a premature death due to the same design flaw. The plastic standoffs which attach the steam boiler to the case tend to become brital and self-destruct, rendering the machine useless. Unfortunately replacement parts are not available. If replacement parts were available these machines would be a five star product. I have complained to Krups US customer service representatives about this problem and they apparently don't care enough about their company's reputation for quality to forward the complaint to the responsible quality control department.