Shoulder buttons were crap so I figured I'd take the bottom half off ONLY so I can get rid of the dust. Did so and now my screen flickers like a 90s CRT monitor. And I was as gentle as patting a baby lamb on the head. So any diagnosis? Could I have jarred the ribbon? Both screens are flickering. And my L-shoulder button doesn't work at all now. Cheers. EDIT: Nevermind, we're fine and dandy with the flicker now. The screws near the battery that invert the screen and stuff. Haha, yeah. Now for my left button to come back to life. EDIT: Alright, I took it apart again and dusted it out and blew into the DS near the buttons a few times. We just had a slight button malfunction...but uh... everything's perfectly all right now. We're fine. We're all fine here now, thank you. How are you?