Just a heads up you may or may not have to tweak the timing. All my shell plates worked fine with the o-ring except for #32 for 45 Colt. It worked ok with the spring but I had to adjust timing to get it to work ok not perfect. Finally called Hornady and they sent me new #32 plate and it works fine now like all others. For me the biggest fix was polishing all the shell plates where the spring rides especially at each case cutout. It knock down all the sharp edges. Not sure if you read that thread by Vince at Enos’s sight I posted but it is a good read on using it. I know some don’t get bothered by using a kinked spring but if you are using a case feeder it really causes issues.