LCD is a pressure connected interface, if the plastic housing fails it will look like the LCD has failed. To bond with JB Weld plastic epoxy, clean surface 90%+ alcohol, light sand surfaces, heat with heat gun/pen, re clean with 90% immediately. Allow to cool. Apply with tooth pocks/popsicle sticks keeping in mind where excess can be used to further reinforce(external sufaces, non pinch/mating surfaces) nice project to save a few hundred bucks.