I am getting ready to get a new top installed in my 63 Convertible. In doing inventory. I noticed that there are screw holes on the Top Header Bow above the section where the tacking strip goes in. In the manual it shows cut away view of the top header bow with a "Metal Retainer". Does anyone have any idea or pictures of the metal retainer that goes on the top header bow. I would also like to know if someone manufactures any. I could not find anything online.