I don't understand the hassle here, I slid the gear itself and the spline/bar/whatever you want to call it out and put it into the other VSS.
It's literally a 5 minute job, there is a simple circlip/screw/split pin or similar that holds it in, I afraid I just can't remember what as it's so long ago.

I KNOW it's simple though, so a good look at the VSS should really find it.