I have rough country 50" light bar. I got this installed at the dealership as it was part of a deal of buying the truck. I love it but it NEVER stops whistling. Ive tried everything. I bought wind isolators, and have bought insulation pieces. Whistling starts at 20 MPH and never stops! I can tilt it really high up for it to stop but then it looks retarded. Please any tips I will take. I love my new ram rebel but this is driving me nuts.