Ok, so I just got my copper foil spindle. I pulled off the copper foil that was on the backing of the Air, folded 6 layers of copper foil in order to have as much conductivity as possible. I then used my double-sided adhesive to stick the shell's back on the IEM... It worked. Before, I could cover the IEM shell with my hands and it would cut out. now I can have both hands cusped over the IEM's and I still get full signal.
Only issue is that the shell does not stay on right now as the double sided tape isn't strong enough to hold the backing. I'll Epoxy the sucker back on and I should be good to go.