Just thought I'd report in I was able to successfully repair my convertible rear wing which had broken mount posts and a broken third brake light mount.

1. Use hot glue to mount the posts and test fit the wing onto the trunk lid. The hot glue holds the posts quite firmly but can be broken off with a push and re-glued until you get the posts in the right spots.

2. Leave the posts hot glued in position and use this stuff around the posts to the wing. Make sure to follow the directions. It's easy once you understand it. Lots of good videos on-line.



I had repaired a broken Yakima roof box and had extra. This stuff is amazing.

3. I applied two coats and let it sit for 48 hours without disturbing it. Super strong:







In the last pic, someone had tried to repair (and failed) with some sort of epoxy. I ground off the inner area so that the post would sit right on the wing surface but left the surrounding ring. The Plasti-Mend bonded the entire thing, epoxy and all.

4. My car is a California car, but still I noticed some water was getting in the holes and not draining well causing corrosion at the back of the trunk lid underneath, so I used a little generic window caulk and made a little barrier around each hole. I made sure to leave a lower drain slot. Water will get in between the wing and trunk lid but it will not get into the holes. These barriers are hidden under the wing.








5. Once the caulk had setup, I installed the wing, lined it up, and snugged up the bolts. Not too tight, but enough to keep it on there.

 

Update: Wing is still solid. Solution looks good to go.

 

Any further updates? Still holding? Two of mine just gave out and i wanna mend em with that plasti-mend. Where did you buy this again?