F250 HD 4x4 front camber problem

I have a 1997 F250 HD and the front tires are angled in at the top. I originally thought the front leaf springs were bad but all references I find show the leafs concave, the rears are convex. If the upper/lower ball joints are bad would I notice it when driving - any rattling or noise? The only thing I notice is that when I turn the wheels the steering wheel does not want to return on its own. Any help would be appreciated. Jeffrey