I have an animation of a needle going from left to right. So as the needle Animates in a semi circle, the Mask follows the animation of the needle revealing the background image. The problem I'm having is, the mask is awkwardly animating, stalling, & having parts of it delayed, the transition is not correct or smooth. I have a file to share which could make it easier to understand if someone can have a look at it.
![](https://cdn.statically.io/img/blend-exchange.giantcowfilms.com/embedImage.png?bid=PLnDEB36)