The dates & VIN ranges you have posted square with data I have had for over 20 years. At Norwood there was no 03A, 03C, 04A, 04B. There was an interruption in output there for some reason. Having worked in manufacturing my entire career I know that for a plant dedicated to a specific product all it is takes an outage of one component to shut it down.
The range of VINs for 02A is N602xxx-N615xxx, over 12,000 units. Probably depleted stock of everything.