JMHO... but excessively tightening the shackle bolts to correct your handling is like putting on a bunch of steering stabilizers to correct sketchy steering...... even if it works, its just a bandaide fix. There has to be something causing your driving woes that should be fixed. Now tightening the bolts just so its handles better while you are mulling over the problem, that is more reasonable. But the problem that often accompanies such actions is that the temporary fix replaces the desire to find a proper solution.

BTW, what are different between your springs from DOR and the springz upgrades? I had to use a couple of huge c-clamps to get my Springz upgrades to line up correctly..... but after doing so, they fit with no gaps.