New to reloading and one of the items I bought is a Trim Mate. It doesnt work very well? It doesnt seem to chamfer very well. I guess the outside of the brass is just to be debured but it looks like its not doin anything. That tool also has a screw through it? is that for changing the diameter for different brass? My carbide hand tool works so much better, any thoughts or suggestions? And does anyone know where I can get carbide tools for this thing? Thanks.