Installed the rear seat belts. I remember talking to the factory some time ago, that they suggested I attach the seat belt buckle on the outside of the seat. What they had found on some aircraft was that the shorter buckle end of the seat belt would slip down under the seat cushion into the centre channel where the elevator push rod is positioned. AEC gave me a hand to retrieve the rear seat from the storage shed and I placed it into position. I found that the ELT antenna is positioned too low, I will have to raise it to clear the rear seat back.