Single or Dual Pattern Cam

It was somewhat....but the old dang Crane catalog......that thing would sometimes have "rough idle" by one, you get it and it idle smooth as silk. Course the more we learned about this stuff, the more we could tell ourselves, but sometimes those descriptions were way off base. lol
I never actually bought a cam from Crane, but I’ve read or heard long ago more than a few times that their descriptions were often more than what it actually was (and now you do as well!) I know that was why I never went with them the few times I bought cams back in the days of only catalogs. Like you say, the more we learn the more you know what you’re looking at.