My wife has a 006 1200L, I just checked the motor mounts that are mentioned in the threads here on the forum, behold I found one loose. Its the one thats behind the forward controls with a 1 inch bold, got it tight now. Question is tho, is this the mount that every body seems to have come loose that causes vibration???? Other than keep checking it, whats the cure???

 

I would maybe try putting some loctite on that bolt. It might help from coming loose again in the future.

 

That bolt and every other bolt...

 

Loctite blue with proper torque.

 

I removed every bolt on my bike I could get my hands on and re-fastened them with blue Loctite. . HD's quality control could be a whole lot better imo..