thank god for this write-up. I had no clue why it wasnt working, and i saw this, went out and checked, and surely enough I had the EXACT same problem as you did, and this guide is helping SO much.
Edit: I am now done, and I must say this write-up helped me IMMENSELY. I thought Id share a few things though.
Taking out the shifter knob is uneccesary.
Taking the snap rings, bearings, gear out, was also not needed.
My method was to get the lock cylinder in with the teeth part correct, then turn the key, remove it, attach the teeth part to the actuator, and lower the key column part onto the teeth part (hoping that the gear didnt move), and then slide the key back in. Worked easier for me heh.
You should address sliding the new actuator in, because its a PITA, you have go get both those spots with the screw pins loose, and actually pull the whole thing toward you, to have room to get the actuator in, at least for me.
And cover how you have to use a vice and punch to get the pin out and in for the rod/actuator, that was a PITA too lol