[AdamHeard]

As Travis touched on, we mechanically limit the motion of the shifting action by limiting how far the external shift block can move (the block threaded onto the cylinder that interfaces to the small internal shaft via bearings).

I have a personal obsession with trying to make things smaller, and doing this allows us to shave the maximum amount of length off the gearbox by reducing the space between the gears (where the dog is), and minimizing how much the cylinder sticks out in the rear.