Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Storage Rack

The storage unit was exactly as advertised, fairly easy to assemble and attach to the garage ceiling. However, the lag bolts intended to secure the assembly to the ceiling were "soft," made of poor quality steel and I had to replace them because the heads twisted off in the joists even with a pilot hole drilled. Also, the lifting mechanism (gear box) worm screw was stripped and as a result it was impossible to crank the storage up or down. This may have been a returned unit to the retailer given the condition of the box upon arrival. I contacted the original equipment manufacturer and they replaced the gear box without cost within a week. The lift is now installed and works as advertised - albeit the 4 star rating comes from all the self help required completing the task.