If you are noticing that the track pad of your controller is oversensitive and twitchy than you will need to calibrate your controller. If you need to do this than this tutorial will guide you how to successfully do it. Follow this steps:
Step 1. Turn off your controller
■ Hold the system button so you can turn it off
■ While pressing the system button hold at the same time the trigger and the menu button.
■ The noise you will hear needs to be different from the regular one
■ SteamVR > Settings > Devices > Pair Controller