My girlfriend has an old Banana Seat Bike. I can't remember the Brand, but I think its a Schwinn Classic Stingray. It's a 20 inch. Well this bike was bought Brand new in like the 70's when her mom was a kid. It was passed down to my girlfriend 20 years later. Now her sister wants it, but the seat is screwed up and its got some scratches on it. I can paint the Frame but I don't know how to refurbish the seat. Like it still has the foam it just need the vinyl on top. How can I fix it? I tried looking for a new one online, but I can't find any nearby so if someone could just tell me how to replace the vinyl, that would be great.