You should post some pics of the freak mod. One a general right hand side of the bike and some close ups of the mod. I would be willing to bet its as the other guys said caused by the direction of the wind. As they suggest building or fabricating up some wind blockers. If you convert to pods you can buy some pod covers that would solve the problem.

I have no faith in human perfectability. I think that human exertion will have no appreciable effect upon humanity. Man is now only more active - not more happy - nor more wise, than he was 6000 years ago. Edgar Allan Poe