So after buying $60 of supplies (the circlip pliers were $40), I got stuck into the motor and sorted it within an hour.
From my point of view that’s a $100 saving, plus some more tools and knowledge / experience gained.
Thanks @Scepterr and @sesat for the tip about ruining circlips when removing them, due to that I also bought 10x spares.
I’ll reinforce the other motor tonight, then hopefully don’t have to do maintenance again on them again for years.
