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From what I remember you should also have so double sided tape cut to shape and about 5 torx self tapping screws per flap. The screw holes were marked on the flap, drill a small pilot hole as you hold them in position. Clean the paint with spirit and dry off, apply the tape tp the flap and then press into place then the screws. Watch out I think the metal temperature is important for the tape to adhere, > 65 or something. Sorry thats all I can recall hope it helps.