hi sages- one of the vehicles in my fleet has a peculiar maintenance need. a black plastic exterior panel about 2 inches wide by 18 inches long came off the drivers side of the body . it fits between the rear door window and side roof window. it had two snap hooks which have broken off and a small screw which holds the bottom to the door skin. the only way i can see to reattach it permanently is to use a thick strong glue to adhere it to the metal part of the door. the question is which glue is up to my application. liquid nails, flex seal, jb weld epoxy, 3m black liquid sealer(used on gm cars),gorilla glue or something else magical. it would have to have strong adhesion and resist heat, sun, rain. any good experience here with such a job. looking for your best advice . thanks tons oldduke