Air is still escaping from my fuel tank, so I'm going to rip out the baffles, re-seal everything, and put in new baffles. The baffles are made of 3/8" Clark foam that came with my kit. I know Clark foam is not available anymore. I see AS&S has Divinycell (PVC) foam and styrofoam. Will either be ok in the fuel tank? Doug Holub