I believe the suspension setup is the same on all ILX models. So this question would apply to all trims.

I read somewhere that the camber is non-adjustable. Can only adjust toe settings. Is this true?

On some of my previous cars, a custom alignment (i had it done at firestone) e.g. -1 camber in front, 0 camber in rear, and 0 toe in front and rear. gave the car a nicer turn in experience. Plus sometimes the factory alignment was a little off to begin with.

I feel on the ILX, dead on center is very sensitive. I would like the car to feel more stable going straight and less likely to turn at the slightest hint of moving the steering wheel. perhaps a tiny bit of toe in could achieve this?

 

I believe the ILX can only adjust toe and caster. Lowering the car will give natural camber, but that's about it.

 

perhaps running a little more positive castor can make the steering right off center a little less sensitive. I feel myself having to concentrate more (compared to other cars) to keep her nice and straight. Right now, just a small input left or right of the steering wheel makes the car wanna drift a little too quickly for me