In Reply to: replace shifter pin, 2N posted by @NTony on April 26, 2022 at 10:21:15:
One thing that may be in your favor is the top cover on the 2N should be made from cast steel, whereas the 1939 and 40 9N's were cast aluminum and did wear easily in the socket. If the socket is in reasonable shape it should support the shift lever and the pin might be reasonably free and not supporting the lever at the bottom of the slot.
If that is the case you might consider drilling a pin size hole on the opposite side of the slot that you can use a punch through to drive out the remains of the old pin and install a new one by driving it in place on the slot side. Just a suggestion. If it works you can then fill the drilled hole with JB Weld to prevent any leaks there.