Argh clone prodject!, I am also making an EOD helm and chest, and I do have the problem of what to do at the back, as I'm using the same file as you is it defantly the one that fits in with the chest L3X BLU3R1V3R linked?
looking good, though it has to be said I have seen an aweful lot of commando helms, but it is epic so i guess its ok lol, im liking the cardboard chest peice got to much easyer to work with in the solidifying stages than paper.