RD700 Sub-chassis keybed glue

Could someone suggest a good glue for fixing the plastic keybed at the key attachment? I’m sure it’s a common problem. I tried a super glue but should have known better. I’m thinking maybe J-B Weld, and maybe adding some kind of wood (popsicle stick) or plastic reinforcement along the back.


Hi, I replaced the plastic keybed for the broken section. I am not sure how well glue would adhere.