allow me to upgrade the slide on my pistol? I bought a Tactical Custom II a few years back, and having seen them abandon the external extractors for internals on their latest offerings, do you think they would allow me to trade in my slide for a newer one, and pay an upgrade fee? I have never contacted them before, and I don't know if that's something they would do. I'd like to become more of a 1911 purist, of a sort, and while I love how my pistol shoots, I'd like to get back to roots...