I was going to get some spare decapping pins for my dies but not sure if the pins would be the new style headed pin or regular pin, so I tried to remove the expander ball to see before I buy. I thought it is as simple as unscrewing the ball off but it won't come off! I don't want to use a tool to hold the ball or rod and leave tool marks! How do you unscrew the ball? I actually contacted RCBS CS at their website, but they just sent me a new rod with a few pins. The one received is still tough to unscrew! There must be some trick!