I don't know if it is that some molds are throwing boolits with larger diameter GC shanks, or my alloy has changed, or my boolits are swelling over time, but since I ran out of Hornady checks, I bought Gator checks, and they are hard to get on. They don't snap on, like the Hornadys. Are they notably smaller, or have less flare on the opening or something? Thanks!