I have a viva axle which was slammed sidewards into a curb smashing a wheel and bending a drive shaft, I have replaced the wheels and drive shaft but have notice when i spin the wheels on a jack both rear wheels bob quite a bit, if i put the wheels on the front they are stright and dont bob arount

Has anyone bent a full axle before?

sounds like the hubs might not be true - I'm sure you can bend an axle but that wouldn't cause the wheels to wobble.

Bent or distorted hubs would though.

Fixed

Took the wheel off again and noticed the small bolt head securing the hub, The wheel was resting on this. Removed and put wheel back on.