How does your 800gs react at high speed? Mine is starting to be buzzy at 75mph. But what I find a bit disturbing is that the front wheel wobbles quite a lot when I have knobbies on it at high speed (60mph and higher), affecting the stability on the bike. I tried my friend's bike, a XR 650 with knobbies, and I was surprised to see that the stability was great, better than on my 800 (but the buzzing was worst on his). Any thoughts? Do you experience the same?