I am necking down some 6.5x47L brass to 6x47L. All the sudden my brass is getting crushed. After doing some exploring, i find that the expander button is causing the trouble. I take it out and all is fine. I put it back in with a little lube and all is ok for a few rounds. I dont understand why this just started. the die is new and i have sized about 50 cases so far without any trouble. Can i neck down my brass without the button in on new brass? What else can i do? My die is a Forster FL Die. I need some advise!! Lee