Rear Axle

[darrsi]

My guess is that at some stage someone without a torque wrench has either used an extension bar, stood on the ratchet or hammered the nut home.
There's not much you can do about it now, and it's not like you can tighten it any more into the wheel.
The swingarm is obviously a tad concaved, but as long as you don't go past the torque setting ever again it 'should' be fine.
That washer is spreading the load over the swingarm, so even though it's a little bent it should still align okay.