Hog III USB wing repair

Does anyone have the correct method for replacing flash buttons on a USB playback wing?
I've done this before but it's always tricky taking the wings apart due to the tiny ribbon connector that connects the top fader board to the bottom circuit board at the rear of the wing or perhaps I am doing this incorrectly.

Of course I'm in Austin today so the wing couldn't be closer to where it was manufactured to begin with.

C
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