Actually now that I think about it, you had mentioned that your rear shocks are pretty far inward. Move them back out and then try some different front springs to get a match. As I said earlier, it is smart to have a full set of available springs to try. If you can get a new front spring that will balance with the new rear location and it's gets better you are on the right track. If it is better but still not good enough, go with a higher spring rate in the rear. You are just adding an order of operations to trial and error testing. I think you're doing pretty good at this point.