Good actual use for gorilla glue (aka, dries slightly rubbery). Clean all the remaining adhesive off the two parts, degrease, and apply a SMALL (ie, like the size of a normal black bean) amount of adhesive to the plate. Apply the plate to the frame, fixing it in place with a couple of pieces of masking tape to prevent it from moving. Follow up by wrapping the area tightly with a spent bicycle tube (this step is important, because gorilla glue/most other "regular" adhesives expand when they cure).