Replacements for my stock axle

I have a 09 base with the 2tr and five speed. When i bought it the rear tires started cupping badly. Had it looked at by a few shops and everyone says the axle bearings seem good but the rear left tire has almost a degree of negative camber and slightly less on the right. Two different people have said my axle is bent and i need a complete housing but i find that hard to believe. Because my rear axle is only LSD i was wondering if there were any good options for mechanical lockers already built into a housing i can swap if i do have to pull the whole axle. Just looking for opinions, keep in mind i do my own work but know my limitations and don't have a lot of experience with troubleshooting something like this. Someone told me i should be able to get a shim kit but others say there isnt such a thing for a straight axle. Let me hear your thoughts

 

is it a 1 owner ????

could a prev owner have tweaked the rear off road rock crawlin ???

 

Had another owner before me and there is evidence he put big tires under it. Has cheap strut spacers in the front (for clearance) so it has just a little carolina squat. Originally i figured the toe was wrong because of the squat and causing my wear but there is no adjustment at all on the axle. Wouldn't you have to just about jump the thing to bend the axle?

 

iv never bent 1 b4

of course its a possibility..................folks love those 900HP Baja supertrucks

if he bent the axle he might not know it

im sure he woudlnt admit it

good luck

 

No way to adjust camber on a live axle. I didn't think 1 degree of neg camber would cause cupping, maybe extra wear on the inside of the tires but that's it. 1 degree is just barely enough that you can't see it with the naked eye. If the live axle housing is bent even slightly I think there would be some sign, maybe the paint on top is cracked/flaked or some gear whine due to axle misalignment with the ring/differential?
Also check the shock absorbers, a bad damper can cause cupping on the tire tread.
I didn't know the base models came with LSD.