With the gear failing to deploy through the normal hydraulic powered unlock actuators, the secondary gravity deployment( backup) also failing can indicate a lack of grease.
The fact a 67 triple gear lube normally takes two men ( or three woman) about eight hours of pumping nasty, black grease into locations rarely seen, usually on midnight shift, suggests those upper trunnions and unlock actuators were starving for grease…..
I can say without doubt, in my 13,200 plus days in the profession, the “ quality” of the new hires hired under the airlines “ fashionable “ DEI policies are failing….
….a ticking time bomb….just my 2C.
A sexist would say...!
/sarc