This is for when you have screwed in your shifter knob too far and now gets stuck in the down position.  Get a small hose clamp and install at the bottom of the shift shaft so it can't go too far down anymore.

https://drive.google.com/file/d/1k9jwR-Uv9UicaaAQZY-QU8rMVYfmKw8D/view?usp=drivesdk