I took out a small punch and drove out the inner roll pin 80% of the way. Then I took a larger punch and drove the larger roll pin out. I placed a magnet to catch the pins so they do not fall into the depths of the tranny.
A roll pin within a roll pin. I have never seen such a thing. I am sure it is there so greater "holding" or outward force is applied. Generally using a punch to drive out a pin is the limiting factor of the amount of holding force can be achieved; pounding a pin in place is easy. The tip of a small punch bends easily, thus the interference fit can not be too great. To achieve the necessary holding capacity a small roll pin is driven into a larger. Cleaver!