I recently purchased my first bike - 09 Kingpin. The bike shows like new with only 5400 miles. While getting used to the bike, I noticed it seemed to shimmy on highways around 55-65 mph. I wasn't sure because I'm a new rider and I spent most time on country roads. I took my first long trip this weekend with my friend who rides a HD Road King. My friends bike has cruize control and occasionally he will take both hands off the bike. I can't Imagine taking my hands off. It feels like I'm riding through wind thermals. I'm curious if the HD is a smoother/heavier ride or is my Kingpin in need of something? Do wheels get out of alignment? Tires unbalanced?