In step #8 the two small screws were very tight in my computer. The Phillips #00 was too large and damaging the screws. I changed to a Phillips #000 applied substantial pressure and voila, the screws came off.
Reassembly: placing the IR sensor cable (the one you"peeled off" in step #9) is a bit tricky. Start from the side opposite the IR sensor (the side with the two small screws of step 8) and press first along the short vertical side and then across towards the IR section. There should be a little left for a vertical section at the IR sensor end.