my barends didn't come with big enough screws. WTF!? it is a bitch to find aluminum meteric screws witht hat thread pattern and a head that stays flush. i'm going to RED loctite that bitch and then i won't ever be able to take it off.

 

the different color loctite are different strengths

 

My l/h bar end fell off,bought a new set of anodised ends but beware! Had to change them again cause they were light and caused my fingers to go numb due to vibration.
Make sure if you buy an aftermarket set that they weigh similar to the stock Honda item.

 

Recently got the hvmp bar ends...they come with the same thread bolts w/ lock washers, which i bet would help. I put them on for a trial run to see how i liked them, and they've really made a difference in the vibration. The smaller of the heavy ones they sell for the F4i are about twice as heavy as stockers and look nice, too. Between that and the new grips i'd say vibration is down about 80%. I thought i was just used to it, but now that the vibration is gone i enjoy my longer rides so much more. Since i'm gonna keep 'em i'll take them off and reinstall w/ blue loctite just in case...