Yesterday I installed the Canadian deflector on my 05 and low and behold the damn thing was vibrating from about 65mph on, just like all of the posts that I had read on the subject. I installed it per the instructions. If you install per the instructions like I did the middle large bump-on does not touch the deflector. All the rest of them touch so I pushed the middle one foward until it touched also. Guess what, it worked the vibrations are gone completly. I just drove for an hour at speeds from 65 to 80 and it didnt even give one quiver. I hope this helps.