I have a Pelican Travel Vault, an older one, which I think is about the same as the 1750. I bought it used, and someone had cut the foam out for an SKS. I'm going to use it exclusively for my Remington 700, and would like to get replacement foam for it, without paying an arm and a leg. Is there any way to use something else other than the factory foam to replace it? I'm sure you can buy some dense foam sheets from somewhere. I also have long since thrown away the other foam, and I'm not sure how thick of a piece I need. Help would be appreciated, thanks.