Harley supposedly set up the counter-balancer system to leave some engine vibration at idle to appeal to old time Harley riders. I'm not sure I really believe that hogwash, it's probably more like their system is only effective in a certain range of rpm and they chose higher rpm smoothness over idle smoothness. Seems like a reasonable choice to me. However, 1roadking's issue seems to be the opposite, vibration OK at idle and more apparent at higher speeds.
1. Ride the bike at the speed and rpm range where the vibration is most apparent, quickly pull the clutch lever and chop the throttle. If the vibration remains, it's not the engine.
2. Run the engine at the rpm where vibration is most apparent while sitting still with the clutch disengaged. See if you get the same vibration as what you feel when riding at that rpm. If so, and it didn't do this before, I'd be inclined to check for motor mount binding issues before assuming anything internal.
3. When in doubt, have your dealer let you ride other similar bikes to see if what you are feeling on your bike is also evident on other 117's.
JMHO - Jerry