Hey everybody, I don't know if this is the right place for me to be asking these questions but I recently made the purchase of a Bachmann Gordon that is In need of repair. It just needs a new motor and the gears in the gearbox have been incorrectly put in. I can't find any repair or service diagrams for this model in the case of the gearbox and for the motor, I live in an Australia so shipping is $100 for a 20 dollar item. I was thinking I could buy a cheap motor off of Ali express but I have since found out that they are different.

Any help would be appreciated because I would love to get this model going.