I have an Ibanez s370-DX. I added two springs to the trem, now I have a total of five, and it still goes out of tune when I dive it. The manual says I should keep the bridge perpindicular to the surface of the guitar, but that would mean considerably lowering the tension, therefore making it even more unstable. I need to INCREASE, not decrease the tension, so that the trem pulls up even more. It doesn't seem like the angle of the trem should make any difference at all. Am I wrong?