Hi, I have a Kirby Heritage II that I purchased new 20 or more years ago (does that make it vintage?) Anyway, I accidentally sucked up a sheer curtain, yanked it out too fast and now when I turn on the roller, I hear a loud "rattling" sound. I only happens when the roller is turned on, so it's not the motor. Not sure which parts need to be replaced. Can someone help me with this?