I took the wing off the other night, because when I wash my car, i notice when i rinse down the trunk , dirty muddy water would come out from under the wing on the back part of my trunk so I took it off to see what was up
Installed

Removed

Cleaned to my best ability
I tried to remove those marks around where the spoiler was before removal,
used clay-bar, tried goo-gone, tried degreaser (heavy duty), tried quik detailer, and nothing works. what gives? is that able to be gotten rid of ?
i re-waxed the surface so it was protected and put the wing back on since I had to go to work tonight and i had no other way to get there