Cassette Spacers? Mountain Bike Cassette Assembly for anyone confused about where the spacers go.

Sorry about the sniffing, was just recovering from being ill in this one. Quick vid just to help some people out when it comes to spacers for cassettes. I do buy used stuff and a few years back had to google all these spacers as was not sure how they should be used. This is on a SRAM PG 1030 but the same principle apply to other cassettes.