Irecently purchaseda 2006 RR SC and am having difficulties with the plastic roof inserts covering the roof rack chanels. I cannot seem to keep them tight. They keep flipping up and coming loose and vibrating. I can pull up on the clips and push back into the channel but they only stay for a few minutes. The vehicle is under factory warranty but I hate complaining aboutsomething like this a month after I bought it. Just curious if anyone else has had similar problems?I could easily enough use some type of adhesive and glue them in butthat eliminates ever putting on roof racks.