Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Need to improve their casting

Bought these to do a complete swap out of all the brakes on a '03 Neon. Front pads were a breeze, rear shoes were ok. Once I tightened everything up, set the adjuster, put it on the ground and took it for a spin, there was a horrible grinding noise out of the right rear. Took it off, made sure I had not flipped the order of the shoes, adjusted it again, and no dice. Ended up putting the old ones back on. These had extra backing plate material that was just enough to grind into the drum.