I just traded my ole quadsport for a 86 honda 200sx that I'm going to sell and i was messing around with it today and went down a hill and it had no engine braking whatsoever. The engine became quite and it just freewheeled down until i gave it a little gas and then it held back. Its actin like a polaris. The only thing thats not stock is that it has a wiseco high comp piston in it. Maybe a clutch problem??