The replacement screen shipped with a bag of tools, including thin plastic shims that were useful to help prise the screen off.
Unfortunately I just gone and dropped it on a tiled floor and the screen is completely borked now :_( Not cracked but doesn't display anything, I presume the ribbon cable or connector is broken.
Hey ho - not much I can do about that, I'm a software guy not hardware. Let's see what the official repair process is like, failing that may give up and get a new Pro-1X...