original part broke (weak design)

replacement part was not identical to the original. Mounting screw sockets did not exist on replacement part. I still used the new part but it is held in place by gravity (no screws). New part works but must be treated gently or will break like the original or fall out of place. Part diagrams online were not adequately clear. It would have been good if photos existed of the replacement from assorted angles, and I would have seen the lack of mounting screw sockets.