Instruct: Classify the given Amazon review into its appropriate rating category
Query: Check the brakes!

Bike came 97% assembled and was packed very well. It was very easy to unpack and fold to ready position. Just had to attach one pedal , tighten some bolts and your done. Bike was moderately heavy but felt sturdy. The only problem I had with the bike was the back brake. It wouldn’t adjust correctly and was rubbing against the rim. I took it to a bike shop and was told that the back brake spring was bent and needed to be changed. Unfortunately I was not happy and returned the bike.