Stopped Starting... Stumped.......

Kind of telling that the 50year old USA original goes back in to replace a 3 year old "Hecho in Mexico" part.

Yep, really frustrating when you kinda assume a part is good and within the life expectancy...so you go spinning your wheels in other areas to diagnose the problem... but turns out to just be the cheap or poorly made replacement part you've rec3ntly changed.
I've had that issue with voltage regulators, long story short...avoid duralast anything and most electrical parts from "the zone".