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3. With one hand, apply pressure upward on the bottom, center, of the rail-track as-
sembly to relieve pressure off the rail-track assembly lock pin. Turn the quarter-turn
fasteners (90 degrees), 2 per side. The quarter-turn fasteners should be easy to turn
once the pressure is off the lock pin.
Do not force the lock pins out.
(1) Apply pressure
upwards on the bottom,
center, of the rail-track
assembly
(2) Turn the quarter-turn
fasteners, 90 degrees
Keep cover open
4. Repeat for the other side.