I'm excited to have acquired my first Dillon, an XL650. The press was setup from Dillon for 45ACP but I also need to setup for 38/357. Do I need both a caliber conversion & a quick change ?? I'd like to be able to switch back & forth as needed. I have read that I'll need to insert a spacer washer in case feeder for the longer 357 shells. Anything I'm overlooking ??