And if you can't wait, you can buy a product called "Foamies" at craft shops (99 cents a sheet) that will also do the trick. Get the 2mm version with self-adhesive. You can use a very thin screwdriver (from Radio Shack) to dig out the old stuff. You'll also need a straight edge and Xacto knife to cut the new material.
One sheet will let you refoam about 50 cameras.
Don't forget to replace the foam for the mirror.