If you have small children who will push or pull the drawer down, consider double lining them up as they will get out of their lane with little effort when pulling the drawer out. . I did this the first time with an empty box and it was very easy to do with very little effort. Once this happens, the ball bearings wear out the small grooves in the outer ring. I fixed this by slightly bending the outer rail to the extended position, which seems to have fixed it. To be on the safe side, I would advise potential customers to drop the crate rating by 10-15 pounds. The manufacturer's rating looks optimistic.