When I had the B springs, I couldn't get positive camber beyond -1.4 on both sides with the Pro3i CC plates. Now, with the C springs I have -0.6 camber on both sides, which is the factory setting. My guess is that with the softer front springs of the B spring set,the front sags somewhat under the weight of the nose.
Now, that may not be what was actually going on but it is a testament to the necessity of CC plates and variation with different parts.