Took out deli drawer (lid was out already due to broken tab), and shelf glass and tracks above it. Removed rear screw to the center air flow contraption behind the deli drawer. Removed 2 screws from the sliding rail. Removed 3 screws that held the end cap part in place. Removed the lever system from the old part that opens and closes the air vent behind the deli drawer noting the setup. The tabs on the arms of the lever slide though the slots if you turn them to line up. Attached the lever system to new part. Screwed the new end cap in place with 3 screws and connected the lever system to the center vent. reattached the sliding rail with 2 screws. Placed the tracks and top glass above. Re-inserted the deli drawer. Re-attached the deli drawer lid by placing the right hole into the tab, then bending left tab slightly out so the tab would go into the hole.