Is this movement normal where the shifter connect?

click the picture for video



I have been hearing this humming especially cruising at 5th gear, and it sort of goes away when I press down on the shifter ....

All the bolts are tight and the only thing I can think where the sound is coming from is the movement of the linkage. The linkage doesn't appear to be hitting the exhaust.

I currently have Mugen shifter bushings in there with C's short shifter, the bushings are relatively new with around 3000 miles to them.