Toolkit 2 - Pipeline 1: Facial Rigging 3 - Adding a Blink

I came into a lot of issues with this tutorial I think because I had too much geometry around the eyes. Setting a pose moved the geometry into weird places and didn't always grab the right weights, I'm not too sure if this is an issue to do with the amount of geometry around the eye or not as I had a similar issue with creating poses for the torso and trousers.