On my last bike, an "03" I had a Roady XM on my handle bar with the antenna right there and rarely lost a signal. Now on my 2010 with XM built in, I loose the signal every time there is trees near the side of the road. The Roady only lost a signal in a tunnel of trees, but this factory XM looses the signal way too often. Is it normal or is my radio malfunctioning? Can I move the anetenna to a better spot on the bike? If so, what do you recommend.