@"Ryan Scott" said:
Hmm. Translation is not an option when I want to add a new track.
It's a kinematic2d if that helps.

Right, translation is for Spatial nodes, not 2D. The equivalent for 2D is position. However, that is what you were using, so I’m guessing that is not the issue.
What are you trying to do?
If you are trying to move the player with physics (hence the KinematicBody2D node), you will need to use the move_and_slide or move_and_collide functions with a velocity instead. The documentation has a page on how to make simple 2d character movement that might be helpful. Animating the position of the player through an AnimationPlayer will not let the KinematicBody2D react to physics, unfortunately.