The previous owner had a new top installed, but they left the old top well fabric in place. It looks a little faded and tattered, so I'd like to replace it. Can't find much in the way of instruction online, so I was wandering if anyone has done this? Any tips greatly appreciated. I know it attaches with trim screws in the front, and under the same metal trim that holds the back of the top in the rear. Looks simple, but I don't want to mess the top up in any way. Where do I start???