Instruct: Classify Amazon reviews into positive or negative sentiment
Query: good product gone bad

I've used these coffee makers for many years, usually getting 18-24 months of daily use before it gave out. But my two recent purchases both suffered from the same problem that, I think, resulted from a design change to the water feed tube. A pressure relief feature in the swivel portion of the water tube spills about half of the boiling water back into the water tank, with only a portion reaching the coffee. The spilled water gets recycled into the cold water, causing the thermostat to trip before all the water is boiled. This greatly increases brewing time because two or three cycles are required to fill the cup. I patched the relief port with tape, and tilted the unit forward to minimize spillage from the relief port. This helped somewhat, telling me that the spill port is the problem. This is a cheap coffee maker that used to be a good value. But not anymore.