Sometimes the nut/bolt comes loose but you'll have to pull the primary cover to check it.
Been a lot of compensators replaced with the SE compensator (PN 40274-08A) but your bike should have it already as stock from the factory.
I had it replaced on my '07 Ultra. $250 part and two hours labor.
Even though that part should already be on your bike, Harley has yet another "better" SE compensator (PN 42200064) that is stock on the 2014 bikes.
Better oiling.
A new item for 2014.
"Still chasing a problem?"
If it is the compensator, not getting it repaired can eventually take out the starter drive. (Expensive).
Usually noisy when the bike is hot and starting the bike and get a loud noise. Kind of a kick-back noise.