When I reinstalled the assembly I had to bend the tiny cable the connects the microphone to the main cable so the gold side of the microphone faces up (to the inside of the phone). The next step in the reinstallation has you installing the ambient light sensor and ambient light sensor. You will need to bend the tiny cable that connects the ambient light sensor 180 degrees so it fits into the recess!
I like adrianbrown's suggestion. Spot on!