I have the same set up as you, here is what I did: Put them on took a ride, no good, adjust, ride again, no good, I finally turned them upside down, pulled them as high as they would go against the light bar and bingo, perfect. You may have to ride some more and adjust the angle to be just right. Now my cap don't blow off, can light a smoke with my ol zippo(at reasonable speed) the best add on I have put on my bike, love it. Hope this helps a bit.
Ride Safe, Live Long