Nick - Just so we're all on the same page here - do you have lower control arms and struts, or Lower A-arms? If you have struts, caster can be corrected with the adjustable struts previously mentioned.
Now... Just curious. Do you have slider adjustments on your upper a frames, or do you have shims? Somehow, I had the idea you had upper and lower A-arms with sliders for your caster and camber adjustmet.