Just getting started on a 87 Honda TRX350D Fixer upper that has been sitting for years. Ordered Oil Filter, Fuel Filter, Air Filter, Battery. Also got a seat cover. It has sat outside and the seat cover and Foam are gone. Just the frame and staples of the old seat cover. Any recommendations on the foam? I want something that is durable and takes up for rough ride. Any special techniques? How about thickness?