i somehow managed to pull the top of the door out when trying to climb up on the worktop. The screws have came away from the side of the cupboard and left a big hole. It looks like the hole is too big to screw the screws back into. Its made of ply wood and only about an inch thick and the cupboard door is really heavy. disaster. is there any sort of glue/filller that would fill the hole and hold the weight of the door?