Hi Marcus,
I've had a go at correct this for you. I combined the layers that you have currently split, but appear at the same time. This way, you can just use the layer property "Hide other slide layers", which removes the need for multiple triggers to hide layers.
I've also use the "Base Layer Objects" to hide the "Title" when the current layer is open.
It looks like the Slider should have a total of 4 steps, 0, 1, 2, 3. It currently has 6.
I make use of the animation complete trigger to show the relevant text.
Hopefully this is closer to what you were looking for with a few less triggers to negotiate.
Cheers,
Sam