Spoiler not going down flush

I know this is very obscure and could me a multitude of things, but before I take it in I would love to know if anyone else has encountered this. - it’s mechanics move fine (raises and lowers) - it does vibrate more than I think it should when the car is running

I know this is very obscure and could me a multitude of things, but before I take it in I would love to know if anyone else has encountered this. - it’s mechanics move fine (raises and lowers) - it does vibrate more than I think it should when the car is running