Replacing cracked axle gears in A Walthers Doodlebug

Bought this one long ago and it had cracked axle gears I mended with super glue. I finally acquired replacement gears from NWSL. I move the mended axles to the rear that only picks up power. the front ones are the only ones driven. Though both front and rear axles are the same. No more clicking noise and drives smoother.