rocker spacers.

mopar, I have been an engineer for 30 years now and have a very good understanding of manufacturing tolerances. 15 of those years was working for companies that machined metal. Though I was never involved in the manufacture of gears I was involved in the machining of parts that required the angular placement of holes from a reference point ( i.e., place a dot in relation to a keyway in relation to a gear tooth). Typically tolerences for precision parts like a timing gear are expressed in minutes (as in 60 minutes to a degree) and the CNC equipment any company that wants to be competitive in todays market needs is repeatable to seconds ( as in 60 seconds to a minute). There is just no reason with today's manufacturing technology for there to be the kinds of error you saw and it's can actually be cheaper to make.

At this point in time I have no idea whom the manufacturer of the parts when I was involved in degreeing a cam (it wasn't a mopar engine though). And I do believe if your goal is to squeeze every last once of power out of the engine you should be checking everything. But statistically seeing only a 1/2 error just isn't a big deal.