I just purchased a new soft top cover for my 67 Series V (to cover the convertible top when it is down), but there is none on the car and I have no idea how or where to attach it to the body - screws, rivets, etc. and where. Any guidance would be sincerely appreciated. I am guessing I need to install the cover first, before the roll or back panel, but again I am working from a point of total ignorance. Thank you, John