I have a 2010 RT SE5 and I have experience the front end and handle bar shaking back a forth. This does not happen all the time. It has happened three times over last summer. The shaking starts between 41 to 43 mph. If I go lower than 41 mph or higher than 43 mph the shaking stops and when you drop back to 41 to 43 it does not shake. I have checked all connections and they seem to be all secured and no problems. I have talked to my service manager at the dealer and he didn't have an answer as he was puzzled by it. He's only suggestion was to rotate the front tires. Has anyone experience this or have an idea in want is causing the shaking?