I was in the middle of depriming some brass when the primers started to become only partially pushed out of the primer pocket. I had to remove the shell holder from the press and pound the primer back into the primer pocked to get the case out of the shell holder. From the instructions I reset the die depth from the shell holder. This didn't help. Moving the lock ring further up the die wasn't helpful. The very top of the die has a threaded nut which for some reason I can't adjust left or right, like it's welded on, (I know it can't be). The decapping pin protrudes from the end of the die and I didn't bother to measure how far it stuck out from the end of the die when the die was working correctly. I can't find anything on the Lee site which describes the function of the top (adjustment) nut on the die. Any suggestions?