I have Yammi Flat bars with tall risers. I added some 1 3/4" spacers below the bars to get more pullback and height. The position is perfect. The problem is that there is too much movement in the rubber bushings. I picked up some Gooden Tite riser bushings (GT-1YS)...that are made for the Warrior. I've checked the threads and could not find a method to remove the old rubber bushings. Ideas?? Thanks in advance.