I fixed my own floppy rear stop light cover, since Honda doesn't have a fix for it. It would flop around when driving, but the worst part was it would allow red light to cover the rear windshield when backing up and interfered with outward viewing.
I pulled off the two Velcro tabs and stuck them to the window with Permatex Ultragrey sealant (similar to Hondabond). I let it sit over night to cure and then pushed the brake light cover upwards and it has held up nicely thus far. No need for me to go back to Honda now.
2016 Coupe Touring - Blue
2002 Honda S2000 - Silver with Blue and Black custom interior. Garage Queen.
2015 Jeep daily driver workhorse.