Need help from one of you Si owners

I need somebody to check their half shafts and tell me if there is a rubber ring (I guess these are some kind of vibration dampeners) around the middle of each one. For some reason there's only one on my passenger side shaft but not the driver's, and the car shakes like a mother at wot.. just wondering if this is my problem.

i didn't have an Si, but I did have those rubber rings you're talking about on both my driver's and passenger's side axles in my old Civic.