Door Handles/door locks vibration? Anyone else notice?

So for some time I've been quite annoyed with some of the craftsmanship of the door panels. Hopefully I'm not the only one experiencing this audible discomfort in their daily ride. Every time I listen to music and the bass ever so lightly hits (I'm talking about FM radio stations playing at volume levels of 13-20) my door locks and the little plastic piece behind the door handle will vibrate just enough to ruin all of the music I listen to. Does anyone else have this problem? Anyone have any DIY techniques to fix the light vibrations?