For you SKS-D guys, are any of you running Type 81 mags? Do they fit nice or need filing? Are they reliable in the SKS-D? I read an older post of an M+M employee saying the feed angle was different from standard AK mags but I'm not sure if that is true or he was making excuses for their M10X running unreliably. So, would you go with 81's or standard AK mags and why? Thanks.