I am a new rider who purchased a new bike last month. It is a new 09 Vulcan Classic that is beautiful and fun. However, at about 60 MPH (on the speedo), the bike begins to vibrate. The faster the speed, the more vibration. The vibration is directly related to speed and not engine RPM. I requested assistance from my dealership's service department but, after having the bike 3 days for a four hour service, they didn't address the problem and I'm afraid to take my bike back. Is this normal? This bike would be so much better if my hands, feet and nether regions weren't numb when I cruise at highway speeds for a few minutes.