I've replaced the keyboard, so reinserting the ribbon was particularly tricky. After several failed attempts, here's what finally dawned on me... I took a piece of scotch tape, maybe an inch long. I folded on end on itself, maybe a quarter inch from the top. That left a sticky zone and a non-sticky zone on the tape. I taped it to the ribbon, and was able to use the tape and a "handle" to pull the ribbon into the socket. Afterwards, I carefully removed the tape without pulling the ribbon out of the socket.
on my screwdriver set, the T6 screw driver felt wobbly. It felt like I would strip the screw if not careful. So I used a T7 screw driver, and it was much more snug.
There's a bracket / handle clip attached to the display port. I didn't know it was there and accidentally bent it off. Can't get it back on, but it seems to work OK without it.