Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Disappointing Machine

This is my third bread machine. I bought this one when my Westinghouse died, and have never made a really good loaf of bread in it. I have to use about twice as much yeast as the recipes call for to get the bread to rise, and every loaf has almost an inch of extremely hard bread at the bottom. I'm not sure what would cause that but I am looking for a new machine.