Make sure two people are lifting the system with hands positioned as illustrated. - ① Extend the rails until the inner rails click into place twice.
- ② Lift the system and lower the rear end to slide the rear nailheads into the slots on the inner rails.
- ③ Slowly lower the front end of the system until the other nailheads go into corresponding slots.
Inspect the side of the rails to make sure the nailheads are placed in the slots. |