
Any road-up:
I do not think you will find a 'complete' axle/gear/wheel assembly, but you do not need it.
The axles will be fine, so you need a new gear, and if you are being 'really' finnicky, possibly one new wheel? - I think from what you have said, one wheels was not square, on the axle. This I would expect if the gear was worn, as it would slip/jump, and that would put pressure (via the rods) on the wheel,as things became stiff, or actually jammed.

I do not think you will find a 'complete' axle/gear/wheel assembly, but you do not need it.
The axles will be fine, so you need a new gear, and if you are being 'really' finnicky, possibly one new wheel? - I think from what you have said, one wheels was not square, on the axle. This I would expect if the gear was worn, as it would slip/jump, and that would put pressure (via the rods) on the wheel,as things became stiff, or actually jammed.
