My Ithaca 37 .12 gauge is plugged to hold only three rounds, I assume, since that's all I can get in it. I know that's required for hunting, and I have no problem with that. (It's brought down many a duck for me.) But if I'm not going to be hunting for a while and want to keep it loaded up for home defense, how do I "unplug" it? I know how to do it with Remington, but not an Ithaca.