Redcargo,
My guess is that the original steps were designed by either a very junior engineer or someone that didn’t care about producability. Labor was cheap back then so not much thought was probably put into assembly time. Also standardizing parts for inter-changeability on an item this minor was probably not in vogue at that time.
Actually those Steps were probably fabricated just for tidying up the 1006, as the earliest photos of it at Silver Plume show it without any steps.
Otto Perry Photo DPL OP-6375