What he said.. Just found out the hard way that although they sell the screen on ebay (Without the LCD), its pointless.. the LCD and screen are bonded in the factory with the face. The screens must be lifted from the warehouse or something.
There is a reason in the video above they don't show removing the LCD or Screen.
I have replaced screen on a 810, 510, Dell VEnue Pro, 8X, etc.. Tonight was the first and last time I tried to do a 1520. The only way to do it is the +$200 replacement body from ebay. If there is a service replacing it for $195.. go that route.