Model KP-51WS520. I accidentally cracked the protective exterior plastic screen on my baby and got good news in that Sony has the part available to sale. It's on it's way and I was wondering if anyone has ever replaced the exterior screen before and how hard it is to do so. I know every tv is different, I see screws on the rear of the screen area all along the sides and across the top. I'm hoping I can just remove those and expose what I need. Anybody done this before?