Hi there, I recently bought an '03 WR450F. It still has the stock idler gear. It had the original chain, so probably not a lot of hours on it. I'm looking for a used starter damper assembly and was wondering what years are compatible. Will an '07 or '08 work, or does it have to be an '04? I have all of the other parts I need. I would rather not spend $200+ for a new one if I don't have to. Thanks for your time.