It looks like the lobe taper was not ground on those lobes properly to me shruggy scope
I had three different hydraulic lifter cams ground with no taper at all from Comp Years ago right after they bought and started using their all new 5 axis cam grinder machines years ago rant
Stupid programmers and engineers whiney

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)