Andy, There's not much shortening you can do to already made springs, usless you mean, making new springs that are shorter than factory ones. Your best bet by far, in view of your set up and apparent experience, is buying internals for a lock such as a Becky or Small Siler, and making your own plate. If I were you, I'd take TOF up on his kind offer, and reshape the Siler plate to your liking.