How do you glue these back on?

Had a deformed corner, decided to bond what i could with MEK. This spot was previously glued with super glue. And was missing a piece. I cleaned off the super glue with a razor knife and got enough to bond. Then i fitted a straight spare grille trim and clamped it. This resulted in the plastic cracking somewhere else in the corner. I half expected it to do that, so it could relieve the stress in that corner. Then i removed the trim. Brushed on a small amount of dow corning DC33 O ring lubricant to the back side of the chrome trim as a mould release, stuck a piece of shrink tubing over the trim stud, and packed the corner full of JBweld. Once dry i popped the trim off, and will final shape, and sand the corner to shape when i have more time.

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