I have this annoying rattle on my 2007 4runner that I think is coming from the roof rack. I have tried moving the side to side bars with no avail to stop the rattle. I also tried taping down the back caps on the rack to see if that would stop as well as tightening all the bolts. I'm at a loss and about ready to take the whole thing off. I do not use the rack because I have a Tundra and a trailer if I ever need to move anything. Does anyone have any experience with this rattle and suggestions on how to stop it or do you know where I can order the replacement parts for if I choose to removed the rack?