Hyundai Elantra / Avante X20 - Squeaking Sound from Head Unit Cover

I'm getting annoyed by the squeaking sound from the head unit cover. I notice that the cover looks like it was not installed properly and I have to push it in.. the sounds gone for a while but then, it happens again.

I believe most of the X20 owner have the same problems and don't be surprise when you remove the head unit cover, only 4 out of 8 clips were there (Wonder why another 4 is missing..hmmm)

Top of the cover (only 2 clips installed - 1 & 4, the remaining 2 missing) the same goes at the bottom

Not to prolong the issue, I just bought another 4 clips and have it installed.. and so far, I'm satisfied with the result.