I don't think this is supposed to rattle, what's wrong?

Good: I found one of these!
Bad: its annoying as hell
Other: I think I grabbed the wrong model?  This is for an RF?

Anyways, lotta movement from the passenger side.

Looking in the receptacle, it appears there might be something inside missing?  Hard to see, but the driver's side appears to have some sort of detent at the bottom and the passenger side (which is loose) is a hole that drops straight through?
Driver's side first, then passenger.

I can't recall those rattling. 

My RF has little slots in the head rests which support the deflector near the top here. It doesn't rattle. 

I think the soft-top one looks like this, but I am not sure:

You might have an RF or aftermarket one.

That looks exactly like the one from my RF. I took it out because I found it didn't do anything except worsen the view out the back.

In reply to maschinenbau :

Yeah, there definitely look like there are indentations on the deflector for something to keep it in place that is missing on the soft top.

Ahh well, it wasn't costly, I can throw it up on the interwebs and make my money back.

What about adding a bit of foam or rubber gasketing material to the edges?  Or on the little tabs on the bottom?  I'll bet you could tighten up the gaps and have it fit just fine.

I like that clear one better than the black mesh thingy that is supposed to be for your car.