Instruct: Classify Amazon reviews into positive or negative sentiment
Query: It tamps fine after 45 mins of modification

The tampers large side was just slightly to large and the small size was too small for Krupps Model 964 espresso machine.I used my shop bench grinder to grind large side down until it fit perfectly. This thing should cost two dollars.I am thankful that I now have a tamper that works well for less than ten bucks.