Lowered the rear of my car today, used new bottom mount bolts and new strut gaskets. The springs I put on were already on sport struts so not taken the suspension unit apart at all, just replaced. It sounds to be coming from the top mounts to me, now I may have overtightened the 2 top mount bolts so I may have threaded them, could this be causeing it? Getting the noise when I go over bumps or uneven surfaces. Any help greatly recived.