I tried multiple times to remove the screen after heating it thoroughly with a hair drier. True, not a heat gun, but the display was well heated. The screen wouldn't budge with a suction cup a bit smaller than the one pictured above. My eureka moment was when I remembered the suction-cup on a car cellphone holder. The edges of the cup just exceed the size of the display, but I was able to turn the ring that "tightened" the suction. I pulled firmly on the base of the cellphone holder, and after a minute or so the display started pulling away. The key was being able to apply an even, slow pull.