After getting the car on the road and driving it around it looks like the driver side rear dropped about 1/2". All the suspension is new front and back. Could the rear leaf spring be binding on the driver side? How could I check? What is the normal distance from the bottom of the rear wheel opening/lip to the center of the wheel in inches? Also, i used polyurethane bushings....really squeaky! Any good spray out there to quiet them down even if it's temporary?