TOM, can you provide the correct way for the tabs to fit on the slots. thanks W5TOR
This is a pretty delicate thing to put in. I have fixed our floor model's with a pair of needle nose pliers, but generally we recommend sending it in.
The two legs of the part have two inward facing pegs on the bottom, and there should be two slots on the right hand side of the tray facing outward. those pegs need to go into those, but not too tightly to restrict sliding back and fourth. when the metal clip is slid all the way to the right, the two flanges on the left hand side need to clear a groove that normally locks the tab down, and provides the tension required for the SD card to make contact with the terminals. the flat part that has the "lock" and "unlock" written on them should be facing outward.
Again, this is fairly delicate, and getting the legs right to stay in the slot and still slide is sort of difficult, but if you believe you can replace it without causing damage, it could be worth a shot, and as long as you don't cause any damage, you can always send it in. it is generally just a case of moving those legs together slightly so they will stay in the grooves.
