I just installed a Kaoko on my bike last weekend and I agree, the hardest part was getting the OEM anchor out. I used three small jeweler's screwdrivers. One on each of the tabs and one in the back of the clip to get it to clear. Then I put a 8" crescent wrench on the shaft of the bolt and hit the wrench with a small hammer.
Must have looked comical, insert screwdrivers, slide crescent on, hit twice with hammer, pick up screwdrivers, insert screwdrivers, slide crescent on bolt, hit twice with hammer, pick up screwdrivers...
Took me better than 20 minutes to get the anchor out. 18 to figure out the correct placement of the screwdrivers and 2 hammer out the anchor. And then 5 minutes to put the Kaoko on, adjust the allen set screw so it's on the under side of the bar at idle.
Tip on the screwdriver placement...Think of the retaining clip as a circle with part of it missing. So it looks like the letter C. When you spring the clip from two sides at the tab points, the back of the C tend to elongate and catch the lip. The third screwdriver was for that part. Once I got the entire clip visibly free of the retaining ring, it cleared it with one whack of the hammer. From there it was just a series of small taps to get it the rest of the way out.
Dennis