Step 15:

the screen sort of sits in the plastic because of the band of material running around the perimeter of the assembly being more firmly attached to the plastic than the screen. I found this step much easier to complete the second time around because i knew to dig my nail in between the screen and the material running around the perimeter of the assembly in a front to back motion. Then i pivoted my nail up 90 degrees so it was between the plastic and the screen and was able to gently pry them apart while heating.