I found this step to be the hardest to put back because of the angle - even with iFixIt's driver Flex Extension.

I couldn't get the suggested Phillips #0 tip to grab. PH#00 worked, but I found the PH#000 to work the best.

When reassembling, do not fully tighten the two 11 mm (orange) screws. When the plastic starts to flex, back it off until the strain on the plastic housing is released and leave it at that. The two 7.25 mm (red) can be snug.