I'm in the middle of replacing the vent window seals on my '67 convertible & having a problem with the 4 metal clips that hold the seal into the the long chrome piece. These are the small rectangular ones that clip onto the seal & then pop into the chrome piece. Since they are bent to hold onto the rubber seal they need to be straightened before they can be rebent onto the new seal. Two of the four of mine have broken while trying to straighten them. Does anyone sell new ones? Or, is there a better way to hold the seal into the piece rather than fighting these clips?