Hi, I've just acquired a rather old set of Lyman reloading tools. They are called the 310 die and loading tool. I'd like to use the set, as it has some calibers I don't reload at the moment. The one problem is that the dies don't seem to screw into the tool, they seem a bit too small. Both are the 310 models, dies and tool, but it won't fit. Do any experienced loader know what's going on here?