I've got a 2012 wrx hatchback and there is a slight vibrating resulting in a buzz from the dash on the flat spot under the clock/temp/mpg display. If I put a bit of pressure on it with a fingertip it stops. Is there a way to shim under there to stop this? I'm not sure I want to pop off the dash myself unless it's a relatively simple process. It's also not that annoying as I only hear it when there's no music on.