Greetings fellow enthusiasts. I recently became owner of my late grandfather's 1957 TBird. The hardtop does not seem to fit properly and I'm wondering if anyone knows if there's a difference between 1955, 1956 and 1957 hardtop sizes. I don't believe the hard top I have matches the 1957. Or it could be that the gaskets and fasteners just need to be replaced. Any info would be greatly appreciated.