Instruct: Classify Amazon reviews into positive or negative sentiment
Query: At near 2:00 PM I find out I have a plug with bad threads

If you have never been to north east PA it is an experience. They roll that sidewalks up at noon. Napa and Car Quest. Both closed by 1:00 PM on Saturday. At 1:45 PM or so I find I have one spark plug that should have never made it into a box. Weld slag in the threads, making it virtually unusable. Nice because I have to drive near an hour to get a set of spark plugs. Even if these plugs do what they claim it doesn't matter if you can't install them without damaging the threads in your motor. Why buy expensive plugs from china when they can't even look at them before they put them in the box?