Reminds me of a guy where I worked at a dealership. He was just on the job training from being a oil changer to be a line tech. Training Schools are attended also . He is now asc certified as well as ford certified . Anyway he pulled a automatic tranny for a rear seal on engine if I remember correctly. Got tranny put back in all buttoned up ready to lower vehicle when he went to his work bench, there laid the shield cover plate that goes between engine and tranny. He was a little unhappy.