I just got my OEM replica wing from spoilerdepot off of e-bay. It looks great and matches the paint perfectly, but the install instructions really suck. There are 7 screw holes and 7 screws, but only 6 gaskets for around the screws, the instructions also only seem to indicate to drill 4 holes.

Has anyone installed one of these? Did you use all 7 screws and how did you actually screw them in since there is the metal underside on the trunk, do you need to drill 1/2" access holes in the underside first?