Since I fitted some Renthal bars I've had to fit their bar ends which are much to light for purpose ,just look good cosmetically .Today I cut the original bars and got the inserts out,these are mounted in rubber and pressed into the ends of the bars,I managed to get the sleeves off and filed the rubber down until it was a tightish fit in the renthal bars,then put some contact adhesive on the inserts and handlebar ends and will leave it now until tomorrow before loctiting the screws and nipping them up and hope they don't move,at least now I'll have some nice weighty bar ends back and no vibes.