Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Had to rebuild

Bought the IR assuming a quality tool, wrong. The outer shell could not be moved without extreme effort. Finally got it apart and found burrs left inside the housing from the manufacturing process, Ground them off with a dremel, reassembled and now works OK. In hindsite probably shoud have just sent the whole thing back. Its not made in USA but China. I have found some of their stuff OK but they have lousy quality control