weighted bar ends

I JUST PURCHASED NEW BAR ENDS FOR MY V-MAX , THEY ARE AWESOME , AND THEY ARE WEIGHTED . BUT I ALSO FORGOT THAT ON ALL OF MY RICE ROCKETS I'VE OWNED ( GSXR1100 , ZX1100 ) THAT THEY WERE WEIGHTED TOO ! .. I ALWAYS THOUGHT THAT THESE WEIGHTED BAR ENDS HELP REDUCE HEAD SHAKE & VIBRATION ! ... IF...