If I made a copy of the file, then I copied each submodel as many times as I needed it, but did so by highlighting pieces and copying and pasting them inside the submodel (example, LGEV's submodel now contains 8 copies of all the requisite parts, the HVY model contains 6, etc), and did this for all of the submodels I've got, would that work?
I can bleed as well as anyone, but I need someone to help me sleep.