With the springs exposed, you can find and replace any that are broken. Look closely at the spring that is on the outboard side; this spring is subject to the most abuse and is the one that is typically broken. Don't worry—OPG has a full selection of replacement springs for just about every year Chevelle. Also, inspect all the metal fasteners holding the spring assembly together. As seen in this picture, they work loose over the years and let the springs shift around, which can affect cover fitment and also makes a bunch of noise when you sit down.