I made a quick video showing how to remove the rear diffuser / valance on my 2020 R, I hope this helps anyone looking to do the same.

 

Excellent workmanship, very impressed!

 

Great video, pausing and circling the hardware to be removed was a nice touch.

I would have knocked those cups off the kitchen counter 3 or 4 times.
Lucky that you had a puppy to assist you. I would have bit your ankle if you had kicked MY kibble!

 

Haha, thanks, I was searching for instructions on how to do this but couldn't find much so I decided to explore it myself.