I added new adjustable levers (RideItForever levers from rideitmoto.com) I do not suggest you use this brand! The mounting point is loose and feels like they got the specs wrong, ended up using a combination of the new lever end to get desired length and the old lever attach point to get around this issue.
Filled the bars with bar buzz kill, which is a silicone product that contains little beads that supposedly absorb vibration this stuff works pretty good but I suspect that BBs or buckshot work similarly for quite a bit less cost. (I didn't see the BB idea until after I had purchased this stuff)