Damn clear corners.

so i have had these clear corners that i bought from ebay on for a week and the rubber skirt that goes on the top of it started to come off today when i was on the freeway. I didnt notice until i got back to work and it looked like i had hella scrathces where the rubber had hit, i know that can be buffed out so thats not a big deal.

What do you reccomend i use to attatch the rubber peace back onto the clear corner?