Thank you for undertaking this effort. Many TB's need this panel fix. I've been thinking about doing this for years. I just bought the LED strips and will wait until you finish your write-up before proceeding.Yeah, I've destroyed my OEM one, It's not easy to cut the entire back assembly off... It's not glued, it's melted together.
The slot at the bottom is the best way and when I get my replacements I'll put up a How-To on it.