Like many of the other posts on this forum about roof racks, I went through a similar process and first purchased aftermarket racks at a fraction of the cost of the factory ones. I was unhappy with how they gripped the roof rails, returned them and bought the factory racks. I have not "permanently" installed them, however, I am also unhappy with how these attach to the roof rails. Upon initial inspection I was much happier with how the "grips" seemed like they would wrap around the lip of the roof rail to make a more secure connection. However, they do not reach under the lip neither in the front nor back and simply rely on pressure against the rails to hold them down. I have tried everything to get them to fit under the lip but the only way it seems possible is to remove the rubber mounting which would then scratch the rail. I am also concerned that tightening them to the recommended pressure will dent or crease the roof rail and leave a mark or dent when removed. Needless to say, after almost triple the cost, I am no more happy than I was with the aftermarket racks. Any suggestions from people who have installed the factory racks? Thanks in advance.