I have a 20" BMX Rallye that my kids only rode a couple of times. I don't know what year it is. I think 80's, but I guess it could be early 90's. The frame and seat look new, but the kickstand, chain and a bolt have rust on them. Does anyone know anything about it? Year made, collector's item? I'm not sure if the Challenger pads belong on the bike or if one of my kids took them off a different bike. Do you know whether they go to this bike?