Thats simply how it works on the VX. My 2 sides just rest on top of the roof rails. No damage is done at all and there is still no danger of the fairing blowing off. What some have done that I have seen is to take the 2 plastic extensions off the sides of the fairing. This way it will rest completely down on the roof, but the fairing is shortened.

This is mine, just resting on the rails....