I bought a new 08 leftover a couple of months ago. Pushing 2000 miles now and mostly love it. It does have fairly serious head/handlebar shake between 38mph and mid 40´s. I´ve had the mechanic check the head bearings at the 600mi service and he says it´s adjusted properly. The tires are properly inflated. Could it be the Scorpian dual sport tires? My Connie was comfy no hands at any speed. Is this normal? Thanks! John