Weight Rattle on D3???

I purchased a new D10-D3 driver about two weeks ago, and after playing 4 rounds with it, I notice that the weight will rattle after hitting a drive.  This doesn't happen every time, but probably once every 20-30 swings.

Ideas...thoughts?

Thanks.

Chad W.

Make sure the SureFit screw is tightened

Use your wrench to tighten the weight. Same wrench you use to change the shaft. Will take care of it. 

Thanks for the replies.

I have taken the weight out and retightened a few times already, and still get the same result.  Let me ask you this...when you take the weight out, should it be loose?  On mine, the actual weight seems like it is on a spindel, and can swivel around.