Purchased on Amazon, used once for kayak transport on a sedan. There's almost no dirt as it was used on a sunny day. Selling because I've switched to a station wagon and no longer need it. No missing parts. Usage Notes: * Suitable for doors with a sash. * When carrying items that are affected by wind pressure, secure them firmly in the front-to-back direction. * The belts may make noise at high speeds. Please use with safety as your top priority and at your own risk, referring to the above points.