The carton was severely damaged. Two bolts were missing. The break does not work on the back wheels. The front wheels were not supplied with brakes as indicated in the add. I purchased the two missing bolts and completed the assembly, but; I cannot use the lift with no brakes on the front and back wheels. Also, the handle is too short to lift 500 pounds. Your help phone line ([****]) has not worked since I received the lift. Do you offer a longer crank handle?