Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Possibly defective.

I recently purchased this product because I was in the market for a potato cutter and this seemed to fit the bill. At first glance, it looked like I had made a good purchase. However, there are two main issues with this product. First, the suction cup barely works. It will hold its grip about half the time. Second, the blades must be dull because the potato cutter was having a heck of a time trying to cut through a small potato... Even after the potato had been in the microwave for a few minutes. Hopefully the potato cutter I received is just defective and Amazon will replace it for me.