FIRST - I read all the related questions and answers about the light and ventilation changes on Appliance Parts Pro. I also looked at the Exploded Views of the parts repeatedly. ( 2 Hours ) The provided website information was a great additional value to the part Cost.
SECOND - I examined the parts and process for removal and restoration before I ordered parts. I wanted to be sure that I understood the screw-points, friction clips and any "Tight" angles. I took everything off, cleaned everything in need, and then ordered the parts. APP reps were very helpful in making sure I ordered the correct parts. They arrived in two days.
THIRD - I slowly and comfortably aligned all the new parts. I gently pressed on the parts that need to align/snap into their fit. I slowly turned the two screws to make sure they were not cross-threading.
Everything went back together in less than 20 minutes. Filter, Stovetop Light Blub (with diffuser glass), and the new front ventilation screen. With the bright, white face parts and the clean, new light, the Whirlpool Microwave looked "New"/restored.
A Slow Hand and Good Awareness of the Alignments makes these projects much easier.
I want to THANK EVERYONE for writing their stories. It helped me understand my appliance before I began.