[skinslapper]

You must find the rattle. Is it coming from the hardware, the shell (Laminate coming away from the wood or wood plies splitting) or is it that your heads are not tuned on high enough that one of them is rattling?

Sometimes you can buy a head that is a tiny bit imperfect around the edge and this can lead to uneaven tuning when tuned low. If you've never had a rattle before, it's probible that this is the case so figure out which one it is and take it back for an exchange.

If it's the hardware, simply have a good look at the drum, tapping at it as you go to find out what it is, then tighten it up.

If it's your shell (tske the heads off and have a good look around the bearing edges for any gaps between layers) then get yourself a really good wood adhesive (glue), sqeaze a healthy amount into the gap, wipe away all excess glue so you don't ruin the bearing edge and find a way to clamp the gap shut, without ruining the bearing edge.

Good luck, let us know what happens.