Exclamation HTC One Earpiece speaker Rattles

Hey I just repaired an HTC One. I got the whole Front assembly including the speaker grills. Transferred everything over and when the volume is all the way up and you play a video with someone talking it will rattle quite bad. But usually only happens when you have it at the loudest setting and someone is talking. If you play music it usually will not happen. I was wondering if anyone else encountered this issue and what would cause it? I have another earpiece speaker on order. Any idea's anyone?

thanks in advance for the help.