I've repaired mine using this method. Go to Lowe's and purchase a flat piece of aluminum at least 3" wide by at least 1/8" thick. Cut a piece off to create a square (3x3, 4x4, etc). Drill 4 holes in the plate at the 4 corners. Coat with silicon or some type of construction adhesive. Locate plate with the center at the location where the anchor point for the gas strut was. Install 4 screws and leave it cure overnight. Next day using self tapping screws reinstall the strut anchor and strut.
Hope this helps.