What the others said. But I gotta ask why? The #2 double longspring is a good rat, mink, and weasel trap the way it is. Just nite-latch it so it has little pan tension and travel and set it for them. Although they are larger and require more space to bed, they are very stable especially in mud, and they drown these animals quick because of their weight. They often act as a killer trap on the mink and weasels. Just make sure they come between the jaws, not over the lose jaw. Rats , mink, and weasels will be caught high, often by both legs.