My carbide dies for my .45 are getting old, real old. The resizing die brings almost all of the casings within the proper size however once in a while one may slip through. My bullet seater is getting harder to control in making sure I get the right length. Some times it will have a .004-.005 difference. Most of the time it varies .003. I have taken them apart and cleaned them with brake cleaner and blown them out with my compressor. I am using an old Herters single stage reloader. Prior to resizing the casing I oil them with oil from Dillons Precision, which they recommend and I just mist them. Can carbide dies wear out and loose their precision or am I ok with them the way they all. Any suggestions or help would be greatly appreciated. Thanks.