How can i re hang my oven door?

How can I re hang my bottom oven door on a Leisure DVGGL26C Gas double oven? I took the door off to replace a screw on the bottom of the oven door now I can't re hang the door. The reason for this is the bottom hinge screws into a metal plate on the back of the front side of the oven carcas. The plate has dropped which I have retrieved with a magnet but finding very difficult to get the metal plate back into position to screw the door hinge into? Any help or advice much appreciated. Mr V