that image got flagged as porn for me.
It has to be taken apart again - and tech these days are 'JR' - so my guess is he did it wrong started it up and heard 'bad sounds' then re-did it, didn't fix it completely so now he's just going to avoid talking about it.
with some luck re-do the job and hope it works again. (its 1 reason I do the absolute min of service since in my experience 60% of the time they do the job wrong even tho its easy to service) And many don't consult the proper service manual.