I want to buy the Yakima rail rider #1 like you have. However, according to the directions with the product, there should be the slider/washer type things in the rail on the car for proper installation. I popped out the rubber pieces on my rails and I don't have these square/rectangular pieces to screw the rack in place. I am trying to figure out if this is something I need, or don't need to properly install the rack before buying it. Did you have these already? Or did you have to buy them? Do I need them? Hopefully you know what I am talking about.
Any help you can offer on this one is greatly appreciated. TIA Michi