Bought a RCBS universal priming tool part no 90201 and have to say I was sorely disappointed with it. First thing I decided to change from large primer to small,there's a plate that has to be removed to change ram size. Under that plate there is a spring that holds the universal jaws for holding cases. When I took the plate off the assembly that holds the spring and jaws in place said spring and jaws went flying,fortunately I found the spring and jaws. Trying to put those parts back together took me over an hour. The plate that holds the spring and jaws is very difficult to hold and the very strong spring and jaws just didn't want to stay put no matter how I tried or did. I boxed everything back up and returned it. Hopefully anyone who has one of these priming tools has had better luck than I did.