Ok, I installed my suspension about a week ago (neuspeed sport springs and tokico adj. struts), and the left side sits a tad lower than the right. I think the problem is in the left rear, because when I make the suspension flex alot, I hear a creaking noise from the left rear. Could this be a bad bushing? If not, what could it be, and should I replce the part on both right and left sides? Thanks!