Finally got my Dillon 550 set up and ready to run......well until I grabbed my handy little 1" wrench to lock down my Dillon dies.....cap they all had the older rings......so a quick look on ebay netted me 10 of the Dillon 1" rings....my question is this....what to do with the old ones? I have a combination of RCBS,Lee, and the older Dillon......should I keep them for anything?