I've field stripped and cleaned my new 24/7 G2c .40 and I want to make sure I've got the grease out of the mags too. I get the little tab/clip from the spring plate pushed in, but the mag bottom won't budge. Any suggestions? I don't want to have to take it to a shop to do something I should be able to take care of. I'm really anxious to finally go out and shoot!