This is no doubt going to sound like probably the dumbest question many of you have ever heard, but it has been bothering me since I started reloading almost 30 years ago. First let me say this happens on all my dies regardless of manufacturer. RCBS, Hornady it does not matter. I set my dies and the lock rings. No matter how tight I tighten those lock rings they come lose as soon as I remove the dies from the press. The RCBS using the set screw and the Hornady split ring clamping type it matters not. They just will not stay tight. Have I been doing something wrong? I thought about replacing the brass set screw in the RCBS dies with a steel one, but was worried about buggering up the die body threads. If any of you would please indulge me in how to avoid resetting the sizing die every single time I change it out I would be forever grateful.