[OUGrad05]

I'm posting this in the general BMW area because I don't believe this applies to just my car. The door lock plungers are the same on these cars. The driver's side plunger has gotten lose some how so it rattles around at speed.
Has anyone else experienced this? How did you fix it? I'm wondering if just a little felt tape around the plunger wouldn't do the trick? It's super annoying, it sounds like a little buzzing noise at times.