1st pic. Arm removed and sitting on the bench.
2nd pic. This is a rubber spacer that you no longer need. It's on the front bushing.
3rd pic. Hole saw. 1 1/4" or 32mm. You need this to cut out the bushing center.
4th pic. Center the hole saw on the bushing. The hole saw will cut the rubber and some of the aluminum on the outer sleeve. Be careful. You want it to go straight, if not not. It will cut the arm it's self.
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