I've read here that the new (relatively) AA hulls have a separate base wad where the old ones were one piece. I also read here that you can tell the difference because the "old" ones have a box around the "AA" and the new ones do not. Is this true? Is there any way to tell if there is a separate base wad short of cutting the shell, which would make it hard to reload? I'm starting to get paranoid on this base wad issue. Using a MEC 9000 machine.