Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The stand wobbles!

I bought this because of the good reviews, but discovered that the machining job was terrible, the plate wobbled. It looked like the pin was not centered when it was turned on a lathe. I returned it and bought the same one thinking that maybe it was just the one that I received that was messed up, no, this one was worse. Now I'm returning it again and buying something different.