Joseph Hovanec

I've had my transit for about three months now and I put a Adrian steel aluminum ladder rack and a 24' fiberglass extention ladder on. Problem is there is an annoying drone at highway speeds. I'm wondering if anyone has a solution for me. It makes an issue when I use the Bluetooth feature because everyone complains about the noise while I am on a call. I have thought about fabricating some kind of cap for the ladder but wanted to ask if anyone has come up with any other solutions.