My housing was cambered out probably 1.5 to 2 degrees. It was causing some goofy tire wear and bad handling.  I was able to bend the housing back into shape with a piece of rail road iron, two log chains and a bottle jack.  Then I added the usual ball and over the top gussets and haven't had any problems since.  People will say it's going to crack, explode or fall apart if you bend it back but the material is fairly soft, which is why it bends in the first place, so it's pretty forgiving as far as straitening by bending back.  To my knowledge no one else had tried this, but I did it and it worked.

I didn't even have my knuckles apart when I bent it back.  Just eyeball it off the back tires and your good to go.  As long as you are on a flat surface and your tires are evenly inflated it's easy to see.  Axles come right out and go back in with no problems.