I got my hard vault in on Thursday, and as the seller stated the foam was crumbling. The bottom foam sheet was sticky and had a dark resin residue so I figured I would have to custom cut new pads. Luckily I was able to get the bottom sheet peeled off the curved foam pieces. I was then able to get any residue off the curved pieces with Goo Gone before I soaked them in a hydrogen peroxide and vinegar bath. After the soak I washed with some Dawn, and rinsed. They were almost like new after this process. I was happy to be able to retain some of the original foam. I then bought a new thin foam sheet to line the bottom of the vault before replacing the original pieces. I am excited so I thought I would share the small project. Here are some pictures of it: